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Dudek MK, Trzeciak K, Tajber L, Zając J, Kaźmierski S, Pindelska E, Makowski T, Svyntkivska M, Potrzebowski MJ. A New Look at the Mechanism of Cocrystal Formation and Coformers Exchange in Processes Forced by Mechanical and/or Thermal Stimuli - ex situ and in situ Studies of Low-Melting Eutectic Mixtures. Chemistry 2024; 30:e202302138. [PMID: 37957130 DOI: 10.1002/chem.202302138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 11/08/2023] [Accepted: 11/08/2023] [Indexed: 11/15/2023]
Abstract
Three different devices: ball mill, hot stage melting, and magic angle spinning (MAS) NMR rotor were used for the preparation of ethenzamide (ET) cocrystals with glutaric acid (GLU), ethylmalonic acid (EMA) and maleic acid (MAL) as coformers. In each case, well-defined binary systems (ET:EMA, ET:GLU, ET:MAL) were obtained. The common features of the two solvent free methods of cocrystal formation (grinding, melting) are presented on the basis of arguments obtained by solid state NMR spectroscopy. Thermal analysis (Differential Scanning Calorimetry) proved that the eutectic phase arises over a wide range of molar ratios of components for each of the binary systems. NMR techniques, supported by theoretical calculations, allowed to provide details about the pathway of the reaction mechanism with atomic accuracy. It was found that the formation of ET cocrystals is a complex process that requires five steps. Each step has been recognized and described. Variable temperature 1D and 2D MAS NMR experiments allowed to track physicochemical processes taking place in a molten state. Moreover, it was found that in a multicomponent mixture consisting of all four components, ET, EMA, GLU, and MAL, ET in the molten phase behaves as a specific selector choosing only one partner to form binary cocrystals according to energy preferences. The process of exchange of coformers in binary systems during grinding, melting, and NMR measurements is described. The stabilization energies (Estab ) and molecular electrostatic potential (MEP) maps computed for the cocrystals under discussion and their individual components rationalize the selection rules and explain the relationships between individual species.
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Affiliation(s)
- Marta K Dudek
- Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363, Lodz, Poland
| | - Katarzyna Trzeciak
- Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363, Lodz, Poland
| | - Lidia Tajber
- School of Pharmacy and Pharmaceuticals Sciences, the SFI Research Centre for Pharmaceuticals, Trinity College Dublin College Green, Dublin 2, Ireland
| | - Justyna Zając
- Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363, Lodz, Poland
| | - Sławomir Kaźmierski
- Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363, Lodz, Poland
| | - Edyta Pindelska
- Department of Pharmaceutical Chemistry and Biomaterials, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-093, Warsaw, Poland
| | - Tomasz Makowski
- Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363, Lodz, Poland
| | - Mariia Svyntkivska
- Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363, Lodz, Poland
| | - Marek J Potrzebowski
- Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363, Lodz, Poland
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2
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Pimonova Y, Carpenter JE, Gruenwald M. Thermodynamic Stability Is a Poor Indicator of Cocrystallization in Models of Organic Molecules. J Am Chem Soc 2024; 146:2805-2815. [PMID: 38241026 DOI: 10.1021/jacs.3c13030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Cocrystallizing a given molecule with another can be useful for adjusting the physical properties of molecules in the solid state. However, most combinations of molecules do not readily cocrystallize but form either one-component crystals or amorphous solids. Computational methods of crystal structure prediction can, in principle, identify the thermodynamically stable cocrystal and thus predict if molecules will cocrystallize or not. However, the pronounced polymorphism and tendency of many organic molecules to form disordered solids suggest that kinetic factors can play an important role in cocrystallization. The question remains: if a binary system of molecules has a thermodynamically stable cocrystal, will it indeed cocrystallize? To address this question, we simulate the crystallization of more than 2600 distinct pairs of chiral model molecules of similar size in 2D and calculate accurate crystal energy landscapes for all of them. Our analysis shows that thermodynamic criteria alone are unreliable in the prediction of cocrystallization. While the vast majority of cocrystals that form in our simulations are thermodynamically favorable, most coformer systems that have a thermodynamically stable cocrystal do not cocrystallize. We furthermore show that cocrystallization rates increase 3-fold when coformers are used that do not form well-ordered single-component crystals. Our results suggest that kinetic factors of cocrystallization are decisive in many cases.
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Affiliation(s)
- Yulia Pimonova
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - John E Carpenter
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Michael Gruenwald
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
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3
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Zhang MM, Chen SL, Huang S, Zheng D, Liang H, Ye B, Chen J, Song X, Liu L, Li J, Chen W, Ji S, Dang L, Li MD. Primary Structural Units "D +A -" Ion Pairs Dominating Near-Infrared Photothermal Conversion of Organic Ionic Cocrystals. J Phys Chem Lett 2024; 15:68-75. [PMID: 38131660 DOI: 10.1021/acs.jpclett.3c03366] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The specific stacking mode of D/A blocks is often considered to largely determine the physicochemical properties of cocrystals. However, this rule may fail when encountering a large degree of (integer or near-integer) charge transfer situations. Herein, we explore the extensive correlations between the possible smallest structural units, stacking modes, and near-infrared photothermal conversion (NIR-PTC) properties of F4TCNQ-based cocrystals with typical features of integer-charge-transfer. Surprisingly, these cocrystals with distinct stacking modes display analogous D-A interactions, broad red-shift absorption, ultrafast (1-3 ps) relaxation dynamics of excited states, and excellent NIR-PTC properties. This supports that the resulting "D+A-" ion pairs from integer-charge-transfer may serve as the primary structural units beneath the secondary stacking modes to dominate the property of cocrystals. The stacking modes play an important but only secondary role. This work provides new insights into the structure-dynamics-property correlations and modular design of organic cocrystals for PTC and other applications.
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Affiliation(s)
- Meng-Meng Zhang
- College of Chemistry and Chemical Engineering, and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Shun-Li Chen
- College of Chemistry and Chemical Engineering, and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Siya Huang
- College of Chemistry and Chemical Engineering, and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Dexin Zheng
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710019, China
| | - Hui Liang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Bowei Ye
- College of Chemistry and Chemical Engineering, and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Jiecheng Chen
- College of Chemistry and Chemical Engineering, and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Xinluo Song
- College of Chemistry and Chemical Engineering, and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Lishan Liu
- College of Chemistry and Chemical Engineering, and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Jiayu Li
- College of Chemistry and Chemical Engineering, and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Wenbin Chen
- College of Chemistry and Chemical Engineering, and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
| | - Shaomin Ji
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Li Dang
- College of Chemistry and Chemical Engineering, and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515031, China
| | - Ming-De Li
- College of Chemistry and Chemical Engineering, and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515031, China
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4
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D’Abbrunzo I, Procida G, Perissutti B. Praziquantel Fifty Years on: A Comprehensive Overview of Its Solid State. Pharmaceutics 2023; 16:27. [PMID: 38258039 PMCID: PMC10821272 DOI: 10.3390/pharmaceutics16010027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 01/24/2024] Open
Abstract
This review discusses the entire progress made on the anthelmintic drug praziquantel, focusing on the solid state and, therefore, on anhydrous crystalline polymorphs, amorphous forms, and multicomponent systems (i.e., hydrates, solvates, and cocrystals). Despite having been extensively studied over the last 50 years, new polymorphs and the greater part of their cocrystals have only been identified in the past decade. Progress in crystal engineering science (e.g., the use of mechanochemistry as a solid form screening tool and more strategic structure-based methods), along with the development of analytical techniques, including Synchrotron X-ray analyses, spectroscopy, and microscopy, have furthered the identification of unknown crystal structures of the drug. Also, computational modeling has significantly contributed to the prediction and design of new cocrystals by considering structural conformations and interactions energy. Whilst the insights on praziquantel polymorphs discussed in the present review will give a significant contribution to controlling their formation during manufacturing and drug formulation, the detailed multicomponent forms will help in designing and implementing future praziquantel-based functional materials. The latter will hopefully overcome praziquantel's numerous drawbacks and exploit its potential in the field of neglected tropical diseases.
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Affiliation(s)
| | | | - Beatrice Perissutti
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy (G.P.)
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5
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Jadhav S, Bahl D, Stevens LL. Coformer-Dependent Physical Stability in a Series of Naringenin-Based Coamorphous Materials with Caffeine, Theophylline, and Theobromine. Pharm Res 2023; 40:2847-2858. [PMID: 37505378 DOI: 10.1007/s11095-023-03562-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 07/07/2023] [Indexed: 07/29/2023]
Abstract
PURPOSE To investigate the production and physical stability of coamorphous materials (CAM) of naringenin (NAR) and coformers-caffeine, theophylline or theobromine (CAF/THY/THE, respectively). We independently assessed the impact of moisture and temperature on the physical stability of CAMs, and transformation products after destabilization were examined. METHODS Neat grinding, liquid assisted grinding and water slurry were selected to prepare multi-component materials with NAR and CAF, THY or THE. The physical stability of CAMs was investigated at 65°C/<10%RH, 21°C/85% RH and 21°C/<10% RH. Differential scanning calorimetry (DSC) and powder X-ray diffraction (PXRD) were employed to monitor for recrystallization during the stability studies. Glass forming ability of amorphous NAR was assessed to understand CAM formation and physical stability. RESULTS NAR:THY and NAR:THE CAMs showed physical stability for approximately nine months, under 21°C/<10% RH while NAR:CAF CAMs destabilized in 2.5 weeks. All CAMs recrystallized within a week at 65°C/<10%RH, and the physical stability at 21°C/85% RH was in the order of - NAR:THY > NAR:THE > NAR:CAF. NAR:THY produced 1:1 cocrystal under all storage conditions, while NAR:CAF destabilized to a 1:1 cocrystal at high RH but a physical mixture at high temperature. NAR:THE was found to recrystallize as a physical mixture in all conditions. NAR was found to be strong glass, with moderate kinetic fragility and good glass forming ability. CONCLUSION Five naringenin-based multi-component solids were generated in this study: 3 new CAMs, 1 new cocrystal, and 1 previously reported cocrystal. Destabilization of CAMs was found to be exposure specific and coformer dependent.
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Affiliation(s)
- Sanika Jadhav
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, 52242, USA
| | - Dherya Bahl
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, 52242, USA
| | - Lewis L Stevens
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, 52242, USA.
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6
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Beran GJO. Frontiers of molecular crystal structure prediction for pharmaceuticals and functional organic materials. Chem Sci 2023; 14:13290-13312. [PMID: 38033897 PMCID: PMC10685338 DOI: 10.1039/d3sc03903j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 11/02/2023] [Indexed: 12/02/2023] Open
Abstract
The reliability of organic molecular crystal structure prediction has improved tremendously in recent years. Crystal structure predictions for small, mostly rigid molecules are quickly becoming routine. Structure predictions for larger, highly flexible molecules are more challenging, but their crystal structures can also now be predicted with increasing rates of success. These advances are ushering in a new era where crystal structure prediction drives the experimental discovery of new solid forms. After briefly discussing the computational methods that enable successful crystal structure prediction, this perspective presents case studies from the literature that demonstrate how state-of-the-art crystal structure prediction can transform how scientists approach problems involving the organic solid state. Applications to pharmaceuticals, porous organic materials, photomechanical crystals, organic semi-conductors, and nuclear magnetic resonance crystallography are included. Finally, efforts to improve our understanding of which predicted crystal structures can actually be produced experimentally and other outstanding challenges are discussed.
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Affiliation(s)
- Gregory J O Beran
- Department of Chemistry, University of California Riverside Riverside CA 92521 USA
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7
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Essen CV, Luedeker D. In silico co-crystal design: Assessment of the latest advances. Drug Discov Today 2023; 28:103763. [PMID: 37689178 DOI: 10.1016/j.drudis.2023.103763] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 08/18/2023] [Accepted: 08/31/2023] [Indexed: 09/11/2023]
Abstract
Pharmaceutical co-crystals represent a growing class of crystal forms in the context of pharmaceutical science. They are attractive to pharmaceutical scientists because they significantly expand the number of crystal forms that exist for an active pharmaceutical ingredient and can lead to improvements in physicochemical properties of clinical relevance. At the same time, machine learning is finding its way into all areas of drug discovery and delivers impressive results. In this review, we attempt to provide an overview of machine learning, deep learning and network-based recommendation approaches applied to pharmaceutical co-crystallization. We also present crystal structure prediction as an alternative to machine learning approaches.
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8
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Rajapaksha H, Benthin GC, Kravchuk DV, Lightfoot H, Mason SE, Forbes TZ. Three-Dimensional Noncovalent Interaction Network within [NpO 2Cl 4] 2- Coordination Compounds: Influence on Thermochemical and Vibrational Properties. Inorg Chem 2023; 62:17265-17275. [PMID: 37816161 PMCID: PMC10598792 DOI: 10.1021/acs.inorgchem.3c02502] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Indexed: 10/12/2023]
Abstract
Noncovalent interactions (NCIs) can influence the stability and chemical properties of pentavalent and hexavalent actinyl (AnO2+/2+) compounds. In this work, the impact of NCIs (actinyl-hydrogen and actinyl-cation interactions) on the enthalpy of formation (ΔHf) and vibrational features was evaluated using Np(VI) tetrachloro compounds as the model system. We calculated the ΔHf values of these solid-state compounds through density functional theory+ thermodynamics (DFT+ T) and validated the results against experimental ΔHf values obtained through isothermal acid calorimetry. Three structural descriptors were evaluated to develop predictors for ΔHf, finding a strong link between ΔHf and hydrogen bond energy (EHtotal) for neptunyl-hydrogen interactions and total electrostatic attraction energy (Eelectrostatictotal) for neptunyl-cation interactions. Finally, we used Raman spectroscopy together with bond order analysis to probe Np=O bond perturbation due to NCIs. Our results showed a strong correlation between the degree of NCIs by axial oxygen and red-shifting of Np=O symmetrical stretch (ν1) wavenumbers and quantitatively demonstrated that NCIs can weaken the Np=O bond. These properties were then compared to those of related U(VI) and Np(V) phases to evaluate the effects of subtle differences in the NCIs and overall properties. In general, the outcomes of our study demonstrated the role of NCIs in stabilizing actinyl solid materials, which consequently governs their thermochemical behaviors and vibrational signatures.
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Affiliation(s)
- Harindu Rajapaksha
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Grant C. Benthin
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Dmytro V. Kravchuk
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Haley Lightfoot
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Sara E. Mason
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
- Center
for Functional Nanomaterials, Brookhaven
National Laboratory, Upton, New York 11973, United States
| | - Tori Z. Forbes
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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9
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Rajapaksha H, Mason SE, Forbes TZ. Synthesis, Characterization, and Density Functional Theory Investigation of the Solid-State [UO 2Cl 4(H 2O)] 2- Complex. Inorg Chem 2023; 62:14318-14325. [PMID: 37610833 PMCID: PMC10481372 DOI: 10.1021/acs.inorgchem.3c01725] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Indexed: 08/25/2023]
Abstract
A significant number of solid-state [UO2Cl4]2- coordination compounds have been synthesized and structurally characterized. Yet, despite their purposive relative abundance in aqueous solutions, characterization of aquachlorouranium(VI) complexes remain rare. In the current study, a solid-state uranyl aqua chloro complex ((C4H12N2)2[UO2Cl4(H2O)]Cl2) was synthesized using piperazinium as a charge-balancing ligand, and the structure was determined using single-crystal X-ray diffraction. Using periodic density functional theory, the electronic structure of the [UO2Cl4(H2O)]2- complex was compared to [UO2Cl4]2- to uncover the strengthening of the U═O bond in [UO2Cl4(H2O)]2-. Changes in the strength of the U═O bond were validated further with Raman and IR spectroscopy, where uranyl symmetrical (ν1) and asymmetrical (ν3) stretches were blue-shifted compared to the reference [UO2Cl4]2- complex. Furthermore, the formation energy of the solid-state (C4H12N2)2[UO2Cl4(H2O)]Cl2 complex was calculated to be -287.60 ± 1.75 kJ mol-1 using isothermal acid calorimetry. The demonstrated higher stability relative to the related [UO2Cl4]2- complex was related to the relative stoichiometry of the counterions.
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Affiliation(s)
- Harindu Rajapaksha
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Sara E. Mason
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
- Center
for Functional Nanomaterials, Brookhaven
National Laboratory, Upton, New York 11973, United States
| | - Tori Z. Forbes
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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10
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Deng Y, Liu S, Jiang Y, Martins ICB, Rades T. Recent Advances in Co-Former Screening and Formation Prediction of Multicomponent Solid Forms of Low Molecular Weight Drugs. Pharmaceutics 2023; 15:2174. [PMID: 37765145 PMCID: PMC10538140 DOI: 10.3390/pharmaceutics15092174] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/15/2023] [Accepted: 08/19/2023] [Indexed: 09/29/2023] Open
Abstract
Multicomponent solid forms of low molecular weight drugs, such as co-crystals, salts, and co-amorphous systems, are a result of the combination of an active pharmaceutical ingredient (API) with a pharmaceutically acceptable co-former. These solid forms can enhance the physicochemical and pharmacokinetic properties of APIs, making them increasingly interesting and important in recent decades. Nevertheless, predicting the formation of API multicomponent solid forms in the early stages of formulation development can be challenging, as it often requires significant time and resources. To address this, empirical and computational methods have been developed to help screen for potential co-formers more efficiently and accurately, thus reducing the number of laboratory experiments needed. This review provides a comprehensive overview of current screening and prediction methods for the formation of API multicomponent solid forms, covering both crystalline states (co-crystals and salts) and amorphous forms (co-amorphous). Furthermore, it discusses recent advances and emerging trends in prediction methods, with a particular focus on artificial intelligence.
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Affiliation(s)
- Yuehua Deng
- Guangdong Provincial Key Lab of Green Chemical Product Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China; (Y.D.); (S.L.)
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark;
| | - Shiyuan Liu
- Guangdong Provincial Key Lab of Green Chemical Product Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China; (Y.D.); (S.L.)
| | - Yanbin Jiang
- Guangdong Provincial Key Lab of Green Chemical Product Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China; (Y.D.); (S.L.)
- School of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Inês C. B. Martins
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark;
| | - Thomas Rades
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark;
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11
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Rajapaksha H, Augustine LJ, Mason SE, Forbes TZ. Guiding Principles for the Rational Design of Hybrid Materials: Use of DFT Methodology for Evaluating Non-Covalent Interactions in a Uranyl Tetrahalide Model System. Angew Chem Int Ed Engl 2023; 62:e202305073. [PMID: 37177866 DOI: 10.1002/anie.202305073] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/11/2023] [Accepted: 05/12/2023] [Indexed: 05/15/2023]
Abstract
Together with the synthesis and experimental characterization of 14 hybrid materials containing [UO2 X4 ]2- (X=Cl- and Br- ) and organic cations, we report on novel methods for determining correlation trends in their formation enthalpy (ΔHf ) and observed vibrational signatures. ΔHf values were analyzed through isothermal acid calorimetry and a Density Functional Theory+Thermodynamics (DFT+T) approach with results showing good agreement between theory and experiment. Three factors (packing efficiency, cation protonation enthalpy, and hydrogen bonding energy [E H , norm total ${{E}_{H,{\rm { norm}}}^{{\rm { total}}}}$ ]) were assessed as descriptors for trends in ΔHf . Results demonstrated a strong correlation betweenE H , norm total ${E_{{\rm{H}},{\rm{norm}}}^{{\rm{total}}} }$ and ΔHf , highlighting the importance of hydrogen bonding networks in determining the relative stability of solid-state hybrid materials. Lastly, we investigate how hydrogen bonding networks affect the vibrational characteristics of uranyl solid-state materials using experimental Raman and IR spectroscopy and theoretical bond orders and find that hydrogen bonding can red-shift U≡O stretching modes. Overall, the tightly integrated experimental and theoretical studies presented here bridge the trends in macroscopic thermodynamic energies and spectroscopic features with molecular-level details of the geometry and electronic structure. This modeling framework forms a basis for exploring 3D hydrogen bonding as a tunable design feature in the pursuit of supramolecular materials by rational design.
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Affiliation(s)
- Harindu Rajapaksha
- Department of Chemistry, University of Iowa, Chemistry Building W374, Iowa City, IA 52242, USA
| | - Logan J Augustine
- Department of Chemistry, University of Iowa, Chemistry Building W374, Iowa City, IA 52242, USA
| | - Sara E Mason
- Department of Chemistry, University of Iowa, Chemistry Building W374, Iowa City, IA 52242, USA
- Center for Funtional Nanomaterials (CFN), Brookhaven National Labotatory, Upton, NY 52242, USA
| | - Tori Z Forbes
- Department of Chemistry, University of Iowa, Chemistry Building W374, Iowa City, IA 52242, USA
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12
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Abramov YA, Iuzzolino L, Jin Y, York G, Chen CH, Shultz CS, Yang Z, Chang C, Shi B, Zhou T, Greenwell C, Sekharan S, Lee AY. Cocrystal Synthesis through Crystal Structure Prediction. Mol Pharm 2023. [PMID: 37279175 DOI: 10.1021/acs.molpharmaceut.2c01098] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Crystal structure prediction (CSP) is an invaluable tool in the pharmaceutical industry because it allows to predict all the possible crystalline solid forms of small-molecule active pharmaceutical ingredients. We have used a CSP-based cocrystal prediction method to rank ten potential cocrystal coformers by the energy of the cocrystallization reaction with an antiviral drug candidate, MK-8876, and a triol process intermediate, 2-ethynylglyclerol. For MK-8876, the CSP-based cocrystal prediction was performed retrospectively and successfully predicted the maleic acid cocrystal as the most likely cocrystal to be observed. The triol is known to form two different cocrystals with 1,4-diazabicyclo[2.2.2]octane (DABCO), but a larger solid form landscape was desired. CSP-based cocrystal screening predicted the triol-DABCO cocrystal as rank one, while a triol-l-proline cocrystal was predicted as rank two. Computational finite-temperature corrections enabled determination of relative crystallization propensities of the triol-DABCO cocrystals with different stoichiometries and prediction of the triol-l-proline polymorphs in the free-energy landscape. The triol-l-proline cocrystal was obtained during subsequent targeted cocrystallization experiments and was found to exhibit an improved melting point and deliquescence behavior over the triol-free acid, which could be considered as an alternative solid form in the synthesis of islatravir.
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Affiliation(s)
- Yuriy A Abramov
- XtalPi Inc., 245 Main Street, Cambridge, Massachusetts 02142, United States
- Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Luca Iuzzolino
- Computational and Structural Chemistry, Merck & Co., Inc., 126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
| | - Yingdi Jin
- XtalPi, Inc., Shenzhen Jingtai Technology Co., Ltd., Futian District, Shenzhen 518100, China
| | - Gregory York
- Analytical Research and Development, Merck & Co., Inc., 126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
| | - Chien-Hung Chen
- Analytical Research and Development, Merck & Co., Inc., 126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
| | - C Scott Shultz
- Analytical Research and Development, Merck & Co., Inc., 126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
| | - Zhuocen Yang
- XtalPi, Inc., Shenzhen Jingtai Technology Co., Ltd., Futian District, Shenzhen 518100, China
| | - Chao Chang
- XtalPi, Inc., Shenzhen Jingtai Technology Co., Ltd., Futian District, Shenzhen 518100, China
| | - Baimei Shi
- XtalPi, Inc., Shenzhen Jingtai Technology Co., Ltd., Futian District, Shenzhen 518100, China
| | - Tian Zhou
- XtalPi, Inc., Shenzhen Jingtai Technology Co., Ltd., Futian District, Shenzhen 518100, China
| | - Chandler Greenwell
- XtalPi Inc., 245 Main Street, Cambridge, Massachusetts 02142, United States
| | - Sivakumar Sekharan
- XtalPi Inc., 245 Main Street, Cambridge, Massachusetts 02142, United States
| | - Alfred Y Lee
- Analytical Research and Development, Merck & Co., Inc., 126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
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13
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Ma P, Toussaint B, Roberti EA, Scornet N, Santos Silva A, Castillo Henríquez L, Cadasse M, Négrier P, Massip S, Dufat H, Hammad K, Baraldi C, Gamberini MC, Richard C, Veesler S, Espeau P, Lee T, Corvis Y. New Lidocaine-Based Pharmaceutical Cocrystals: Preparation, Characterization, and Influence of the Racemic vs. Enantiopure Coformer on the Physico-Chemical Properties. Pharmaceutics 2023; 15:pharmaceutics15041102. [PMID: 37111588 PMCID: PMC10142540 DOI: 10.3390/pharmaceutics15041102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 04/03/2023] Open
Abstract
This study describes the preparation, characterization, and influence of the enantiopure vs. racemic coformer on the physico-chemical properties of a pharmaceutical cocrystal. For that purpose, two new 1:1 cocrystals, namely lidocaine:dl-menthol and lidocaine:d-menthol, were prepared. The menthol racemate-based cocrystal was evaluated by means of X-ray diffraction, infrared spectroscopy, Raman, thermal analysis, and solubility experiments. The results were exhaustively compared with the first menthol-based pharmaceutical cocrystal, i.e., lidocaine:l-menthol, discovered in our group 12 years ago. Furthermore, the stable lidocaine/dl-menthol phase diagram has been screened, thoroughly evaluated, and compared to the enantiopure phase diagram. Thus, it has been proven that the racemic vs. enantiopure coformer leads to increased solubility and improved dissolution of lidocaine due to the low stable form induced by menthol molecular disorder in the lidocaine:dl-menthol cocrystal. To date, the 1:1 lidocaine:dl-menthol cocrystal is the third menthol-based pharmaceutical cocrystal, after the 1:1 lidocaine:l-menthol and the 1:2 lopinavir:l-menthol cocrystals reported in 2010 and 2022, respectively. Overall, this study shows promising potential for designing new materials with both improved characteristics and functional properties in the fields of pharmaceutical sciences and crystal engineering.
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Affiliation(s)
- Panpan Ma
- CNRS, INSERM, UTCBS, Chemical and Biological Technologies for Health Group, Université Paris Cité, F-75006 Paris, France
| | - Balthazar Toussaint
- CNRS, INSERM, UTCBS, Chemical and Biological Technologies for Health Group, Université Paris Cité, F-75006 Paris, France
- Département Recherche et Développement Pharmaceutique (DRDP), Agence générale des Équipements et Produits de Santé, AP-HP, F-75005 Paris, France
| | - Enrica Angela Roberti
- CNRS, INSERM, UTCBS, Chemical and Biological Technologies for Health Group, Université Paris Cité, F-75006 Paris, France
| | - Noémie Scornet
- CNRS, INSERM, UTCBS, Chemical and Biological Technologies for Health Group, Université Paris Cité, F-75006 Paris, France
| | - Axel Santos Silva
- CNRS, INSERM, UTCBS, Chemical and Biological Technologies for Health Group, Université Paris Cité, F-75006 Paris, France
| | - Luis Castillo Henríquez
- CNRS, INSERM, UTCBS, Chemical and Biological Technologies for Health Group, Université Paris Cité, F-75006 Paris, France
| | - Monique Cadasse
- Département Physico-Chimie du Médicament, Unité Pédagogique de Chimie Analytique, Physique et Toxicologie, Faculté de Santé, Université Paris Cité, 4 Avenue de l’Observatoire, F-75006 Paris, France
| | - Philippe Négrier
- Laboratoire Ondes et Matière d’Aquitaine, Université de Bordeaux, UMR 5798, F-33400 Talence, France
| | - Stéphane Massip
- CNRS, INSERM, IECB, Université de Bordeaux, UAR 3033, F-33600 Pessac, France
| | - Hanh Dufat
- CiTCoM, Université Paris Cité, UMR CNRS 8038, F-75006 Paris, France
| | - Karim Hammad
- CiTCoM, Université Paris Cité, UMR CNRS 8038, F-75006 Paris, France
| | - Cecilia Baraldi
- Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | | | - Cyrille Richard
- CNRS, INSERM, UTCBS, Chemical and Biological Technologies for Health Group, Université Paris Cité, F-75006 Paris, France
| | - Stéphane Veesler
- CNRS, Aix-Marseille Université, CINaM (Centre Interdisciplinaire de Nanosciences de Marseille), Campus de Luminy, CEDEX 09, F-13288 Marseille, France
| | - Philippe Espeau
- CNRS, INSERM, UTCBS, Chemical and Biological Technologies for Health Group, Université Paris Cité, F-75006 Paris, France
| | - Tu Lee
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 320317, Taiwan
| | - Yohann Corvis
- CNRS, INSERM, UTCBS, Chemical and Biological Technologies for Health Group, Université Paris Cité, F-75006 Paris, France
- Correspondence:
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14
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Surov AO, Ramazanova AG, Voronin AP, Drozd KV, Churakov AV, Perlovich GL. Virtual Screening, Structural Analysis, and Formation Thermodynamics of Carbamazepine Cocrystals. Pharmaceutics 2023; 15:pharmaceutics15030836. [PMID: 36986697 PMCID: PMC10052035 DOI: 10.3390/pharmaceutics15030836] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
In this study, the existing set of carbamazepine (CBZ) cocrystals was extended through the successful combination of the drug with the positional isomers of acetamidobenzoic acid. The structural and energetic features of the CBZ cocrystals with 3- and 4-acetamidobenzoic acids were elucidated via single-crystal X-ray diffraction followed by QTAIMC analysis. The ability of three fundamentally different virtual screening methods to predict the correct cocrystallization outcome for CBZ was assessed based on the new experimental results obtained in this study and data available in the literature. It was found that the hydrogen bond propensity model performed the worst in distinguishing positive and negative results of CBZ cocrystallization experiments with 87 coformers, attaining an accuracy value lower than random guessing. The method that utilizes molecular electrostatic potential maps and the machine learning approach named CCGNet exhibited comparable results in terms of prediction metrics, albeit the latter resulted in superior specificity and overall accuracy while requiring no time-consuming DFT computations. In addition, formation thermodynamic parameters for the newly obtained CBZ cocrystals with 3- and 4-acetamidobenzoic acids were evaluated using temperature dependences of the cocrystallization Gibbs energy. The cocrystallization reactions between CBZ and the selected coformers were found to be enthalpy-driven, with entropy terms being statistically different from zero. The observed difference in dissolution behavior of the cocrystals in aqueous media was thought to be caused by variations in their thermodynamic stability.
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Affiliation(s)
- Artem O Surov
- G.A. Krestov Institute of Solution Chemistry RAS, 153045 Ivanovo, Russia
| | - Anna G Ramazanova
- G.A. Krestov Institute of Solution Chemistry RAS, 153045 Ivanovo, Russia
| | | | - Ksenia V Drozd
- G.A. Krestov Institute of Solution Chemistry RAS, 153045 Ivanovo, Russia
| | - Andrei V Churakov
- Institute of General and Inorganic Chemistry RAS, Leninsky Prosp. 31, 119991 Moscow, Russia
| | - German L Perlovich
- G.A. Krestov Institute of Solution Chemistry RAS, 153045 Ivanovo, Russia
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15
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Ding F, Cao W, Wang R, Wang N, Li A, Wei Y, Qian S, Zhang J, Gao Y, Pang Z. Mechanistic Study on Transformation of Coamorphous Baicalein-Nicotinamide to Its Cocrystal Form. J Pharm Sci 2023; 112:513-524. [PMID: 36150469 DOI: 10.1016/j.xphs.2022.08.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 08/24/2022] [Accepted: 08/24/2022] [Indexed: 01/18/2023]
Abstract
Recently, coamorphization and cocrystal technologies are of particular interest in the pharmaceutical industry due to their ability to improve the solubility/dissolution and bioavailability of poorly water-soluble drugs, while the coamorphous system often tends to convert into the stable crystalline form usually crystalline physical mixture of each component during formulation preparation or storage. In this paper, BCS II drug baicalein (BAI) along with nicotinamide (NIC) were prepared into a single homogeneous coamorphous system with a single transition temperature at 42.5 °C. Interestingly, instead of the physical mixture of crystalline BAI and NIC, coamorphous BAI-NIC would transform to its cocrystal form under stress of temperature and humidity. The transformation rate under isothermal condition was temperature-dependent, since the crystallinity of the cocrystal enhanced as the temperature increased. Further mechanic studies showed the activation energy for the transformation under non-isothermal condition was calculated to be 184.52 kJ/mol. Additionally, water vapor sorption tests with further solid characterizations indicated the transformation was faster under higher humidity condition due to the faster nucleation process of cocrystal BAI-NIC. This research not only discovered the mechanism of transformation from coamorphous BAI-NIC to cocrystal form, but also provided an unusual method for cocrystal preparation from its coamorphous form.
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Affiliation(s)
- Fei Ding
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China; Yangtze River Pharmaceutical Group Nanjing Hailing Pharmaceutical Co., Ltd., Nanjing, 210049, PR China
| | - Wei Cao
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Runze Wang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Ningning Wang
- School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Anran Li
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Yuanfeng Wei
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Shuai Qian
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Jianjun Zhang
- School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Yuan Gao
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China.
| | - Zunting Pang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China.
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16
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Guidetti M, Hilfiker R, Kuentz M, Bauer-Brandl A, Blatter F. Exploring the Cocrystal Landscape of Posaconazole by Combining High-Throughput Screening Experimentation with Computational Chemistry. CRYSTAL GROWTH & DESIGN 2023; 23:842-852. [PMID: 36747574 PMCID: PMC9896487 DOI: 10.1021/acs.cgd.2c01072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/05/2022] [Indexed: 06/18/2023]
Abstract
The development of multicomponent crystal forms, such as cocrystals, represents a means to enhance the dissolution and absorption properties of poorly water-soluble drug compounds. However, the successful discovery of new pharmaceutical cocrystals remains a time- and resource-consuming process. This study proposes the use of a combined computational-experimental high-throughput approach as a tool to accelerate and improve the efficiency of cocrystal screening exemplified by posaconazole. First, we employed the COSMOquick software to preselect and rank cocrystal candidates (coformers). Second, high-throughput crystallization experiments (HTCS) were conducted on the selected coformers. The HTCS results were successfully reproduced by liquid-assisted grinding and reaction crystallization, ultimately leading to the synthesis of thirteen new posaconazole cocrystals (7 anhydrous, 5 hydrates, and 1 solvate). The posaconazole cocrystals were characterized by PXRD, 1H NMR, Fourier transform-Raman, thermogravimetry-Fourier transform infrared spectroscopy, and differential scanning calorimetry. In addition, the prediction performance of COSMOquick was compared to that of two alternative knowledge-based methods: molecular complementarity (MC) and hydrogen bond propensity (HBP). Although HBP does not perform better than random guessing for this case study, both MC and COSMOquick show good discriminatory ability, suggesting their use as a potential virtual tool to improve cocrystal screening.
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Affiliation(s)
- Matteo Guidetti
- Solid-State
Development Department, Solvias AG, Römerpark 2, CH-4303Kaiseraugst, Switzerland
| | - Rolf Hilfiker
- Solid-State
Development Department, Solvias AG, Römerpark 2, CH-4303Kaiseraugst, Switzerland
| | - Martin Kuentz
- Institute
of Pharma Technology, University of Applied
Sciences and Arts Northwestern Switzerland, CH-4132Muttenz, Switzerland
| | - Annette Bauer-Brandl
- Department
of Physics, Chemistry and Pharmacy, University
of Southern Denmark, Campusvej 55, 5230Odense, Denmark
| | - Fritz Blatter
- Solid-State
Development Department, Solvias AG, Römerpark 2, CH-4303Kaiseraugst, Switzerland
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17
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Petroselli M, Saccone M, Cametti M. Aryl Boronic Acids in Columnar Stacked Co-crystalline Materials: Key-Factors Governing the Assembly with Quinones. Chemphyschem 2023; 24:e202200883. [PMID: 36688418 DOI: 10.1002/cphc.202200883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 01/24/2023]
Abstract
The assembly of aryl boronic acids B with quinones Q into columnar mixed stacked materials, as previously observed in the solid-state, has been here subjected to a detailed theoretical analysis focusing on the properties of the isolated synthons (HOMO-LUMO energies, electron affinity, ionization potential, reorganization hole/electron energies, partial Hirshfeld atomic charges and conformation stabilities) as well as those of the 1 : 1 adducts (Hirshfeld analysis, IRI surfaces, Hirshfeld atomic charges, hydrogen bond and slipped stacked π-π contributions). The overall picture obtained throught this study shows an intricate pattern of interconnected factors contributing to the formation and stability of the Bx Qy adducts, and it unveils the importance of parameters such as HOMO-LUMO gap, polarization and charge transfer, in addition to the more evident hydrogen bond and slipped-stacked π-π interactions in the formation of 1 : 1 adducts. An explanation has been also given for the presence in some Bx Qy adducts of the rare anti-anti conformation for the BO-H group with respect to the most studied and common anti-syn conformation.
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Affiliation(s)
- Manuel Petroselli
- Laboratorium für Organische Chemie, Eidgenössische Technische Hochschule (ETH) Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Marco Saccone
- Dipartimento di Ingegneria, Università Degli Studi di Palermo, Viale Delle Scienze, Edificio 6, 90128, Palermo, Italy
| | - Massimo Cametti
- Dipartimento di Chimica Materiali e Ingegneria Chimica "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131, Milano, Italy
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18
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Trzeciak K, Wielgus E, Kaźmierski S, Khalaji M, Dudek MK, Potrzebowski MJ. Unexpected Factors Affecting the Kinetics of Guest Molecule Release from Investigation of Binary Chemical Systems Trapped in a Single Void of Mesoporous Silica Particles. Chemphyschem 2022; 24:e202200884. [PMID: 36507917 DOI: 10.1002/cphc.202200884] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/09/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022]
Abstract
In this work, we present results for loading of well-defined binary systems (cocrystal, solid solution) and untreated materials (physical mixtures) into the voids of MCM-41 mesoporous silica particles employing three different filling methods. The applied techniques belong to the group of "wet methods" (diffusion supported loading - DiSupLo) and "solvent-free methods" (mechanical ball-mill loading - MeLo, thermal solvent free - TSF). As probes for testing the guest1-guest2 interactions inside the MCM-41 pores we employed the benzoic acid (BA), perfluorobenzoic acid (PFBA), and 4-fluorobenzoic acid (4-FBA). The guests intermolecular contacts and phase changes were monitored employing magic angle spinning (MAS) NMR Spectroscopy techniques and powder X-ray diffraction (PXRD). Since mesoporous silica materials are commonly used in drug delivery system research, special attention has been paid to factors affecting guest release kinetics. It has been proven that not only the content and composition of binary systems, but also the loading technique have a strong impact on the rate of guests release. Innovative methods of visualizing differences in release kinetics are presented.
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Affiliation(s)
- Katarzyna Trzeciak
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza Łódź, 112, 90-363, Lodz, Poland
| | - Ewelina Wielgus
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza Łódź, 112, 90-363, Lodz, Poland
| | - Sławomir Kaźmierski
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza Łódź, 112, 90-363, Lodz, Poland
| | - Mehrnaz Khalaji
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza Łódź, 112, 90-363, Lodz, Poland
| | - Marta K Dudek
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza Łódź, 112, 90-363, Lodz, Poland
| | - Marek J Potrzebowski
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza Łódź, 112, 90-363, Lodz, Poland
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19
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Sugden IJ, Braun DE, Bowskill DH, Adjiman CS, Pantelides CC. Efficient Screening of Coformers for Active Pharmaceutical Ingredient Cocrystallization. CRYSTAL GROWTH & DESIGN 2022; 22:4513-4527. [PMID: 35915670 PMCID: PMC9337750 DOI: 10.1021/acs.cgd.2c00433] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Controlling the physical properties of solid forms for active pharmaceutical ingredients (APIs) through cocrystallization is an important part of drug product development. However, it is difficult to know a priori which coformers will form cocrystals with a given API, and the current state-of-the-art for cocrystal discovery involves an expensive, time-consuming, and, at the early stages of pharmaceutical development, API material-limited experimental screen. We propose a systematic, high-throughput computational approach primarily aimed at identifying API/coformer pairs that are unlikely to lead to experimentally observable cocrystals and can therefore be eliminated with only a brief experimental check, from any experimental investigation. On the basis of a well-established crystal structure prediction (CSP) methodology, the proposed approach derives its efficiency by not requiring any expensive quantum mechanical calculations beyond those already performed for the CSP investigation of the neat API itself. The approach and assumptions are tested through a computational investigation on 30 potential 1:1 multicomponent systems (cocrystals and solvate) involving 3 active pharmaceutical ingredients and 9 coformers and one solvent. This is complemented with a detailed experimental investigation of all 30 pairs, which led to the discovery of five new cocrystals (three API-coformer combinations, a polymorphic cocrystal example, and one with different stoichiometries) and a cis-aconitic acid polymorph. The computational approach indicates that, for some APIs, a significant proportion of all potential API/coformer pairs could be investigated with only a brief experimental check, thereby saving considerable experimental effort.
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Affiliation(s)
- Isaac J. Sugden
- Molecular
Systems Engineering Group, Department of Chemical Engineering, Sargent
Centre for Process Systems Engineering, Institute for Molecular Science
and Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Doris E. Braun
- University
of Innsbruck, Institute of Pharmacy,
Pharmaceutical Technology, Josef-Moeller-Haus, Innrain 52c, A-6020 Innsbruck, Austria
| | - David H. Bowskill
- Molecular
Systems Engineering Group, Department of Chemical Engineering, Sargent
Centre for Process Systems Engineering, Institute for Molecular Science
and Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Claire S. Adjiman
- Molecular
Systems Engineering Group, Department of Chemical Engineering, Sargent
Centre for Process Systems Engineering, Institute for Molecular Science
and Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Constantinos C. Pantelides
- Molecular
Systems Engineering Group, Department of Chemical Engineering, Sargent
Centre for Process Systems Engineering, Institute for Molecular Science
and Engineering, Imperial College London, London SW7 2AZ, United Kingdom
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20
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Hawkins BA, Du JJ, Lai F, Stanton SA, Williams PA, Groundwater PW, Platts JA, Overgaard J, Hibbs DE. An experimental and theoretical charge density study of theophylline and malonic acid cocrystallization. RSC Adv 2022; 12:15670-15684. [PMID: 35685708 PMCID: PMC9126648 DOI: 10.1039/d1ra08389a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/16/2022] [Indexed: 11/29/2022] Open
Abstract
The pharmaceutical agent theophylline (THEO) is primarily used as a bronchodilator and is commercially available in both tablet and liquid dosage forms. THEO is highly hygroscopic, reducing its stability, overall shelf-life, and therefore usage as a drug. THEO and dicarboxylic acid cocrystals were designed by Trask et al. in an attempt to decrease the hygroscopic behaviour of THEO; cocrystallisation of THEO with malonic acid (MA) did not improve the hygroscopic stability of THEO in simulated atmospheric humidity testing. The current study employed high-resolution X-ray crystallography, and Density Functional Theory (DFT) calculations to examine the electron density distribution (EDD) changes between the cocrystal and its individual components. The EED changes identified the reasons why the THEO:MA cocrystal did not alter the hygroscopic profile of THEO. The cocrystal was equally porous, with atomic packing factors (APF) similar to those of THEO 0.73 vs. 0.71, respectively. The THEO:MA (1) cocrystal structure is held together by an array of interactions; a heterogeneous synthon between the imidazole and a carboxylic fragment stabilising the asymmetric unit, a pyrimidine-imidazole homosynthon, and an aromatic cycle stack between two THEO moieties have been identified, providing 9.7–12.9 kJ mol−1 of stability. These factors did not change the overall relative stability of the cocrystal relative to its individual THEO and MA components, as shown by cocrystal (1) and THEO being equally stable, with calculated lattice energies within 2.5 kJ mol−1 of one other. The hydrogen bond analysis and fragmented atomic charge analysis highlighted that the formation of (1) combined both the EDD of THEO and MA with no net chemical change, suggesting that the reverse reaction — (1) back to THEO and MA — is of equal potential, ultimately producing THEO hydrate formation, in agreement with the work of Trask et al. These results highlight that a review of the EDD change associated with a chemical reaction can aid in understanding cocrystal design. In addition, they indicate that cocrystal design requires further investigation before becoming a reliable process, with particular emphasis on identifying the appropriate balance of synthon engineering, weak interactions, and packing dynamics. In this study, the 1:1 cocrystal of theophylline and malonic acid originally engineered by Trask undergoes charge density analysis to rationalise the chemical change process seen throughout crystallisation.![]()
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Affiliation(s)
- Bryson A Hawkins
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney NSW 2006 Australia
| | - Jonathan J Du
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney NSW 2006 Australia
| | - Felcia Lai
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney NSW 2006 Australia
| | - Stephen A Stanton
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney NSW 2006 Australia
| | - Peter A Williams
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney NSW 2006 Australia .,School of Science and Health, Western Sydney University Locked Bag 1797 Penrith NSW 27513 Australia
| | - Paul W Groundwater
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney NSW 2006 Australia
| | - James A Platts
- School of Chemistry, Cardiff University Cardiff CF10 3AT UK
| | - Jacob Overgaard
- Department of Chemistry and Centre for Integrated Materials Research (iMAT), Aarhus University Langelandsgade 140, Aarhus C DK-8000 Denmark
| | - David E Hibbs
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney NSW 2006 Australia
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21
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Nunez Avila AG, Deschênes-Simard B, Arnold JE, Morency M, Chartrand D, Maris T, Berger G, Day GM, Hanessian S, Wuest JD. Surprising Chemistry of 6-Azidotetrazolo[5,1- a]phthalazine: What a Purported Natural Product Reveals about the Polymorphism of Explosives. J Org Chem 2022; 87:6680-6694. [PMID: 35504046 DOI: 10.1021/acs.joc.2c00369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
6-Azidotetrazolo[5,1-a]phthalazine (ATPH) is a nitrogen-rich compound of surprisingly broad interest. It is purported to be a natural product, yet it is closely related to substances developed as explosives and is highly polymorphic despite having a nearly planar structure with little flexibility. Seven solid forms of ATPH have been characterized by single-crystal X-ray diffraction. The structures show diverse patterns of molecular organization, including both stacked sheets and herringbone packing. In all cases, N···N and C-H···N interactions play key roles in ensuring molecular cohesion. The high polymorphism of ATPH appears to arise in part from the ability of virtually every atom of nitrogen and hydrogen in the molecule to take part in close N···N and C-H···N contacts. As a result, adjacent molecules can adopt many different relative orientations that are energetically similar, thereby generating a polymorphic landscape with an unusually high density of potential structures. This landscape has been explored in detail by the computational prediction of crystal structures. Studying ATPH has provided insights into the field of energetic materials, where access to multiple polymorphs can be used to improve performance and clarify how it depends on molecular packing. In addition, our work with ATPH shows how valuable insights into molecular crystallization, often gleaned from statistical analyses of structural databases, can also come from in-depth empirical and theoretical studies of single compounds that show distinctive behavior.
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Affiliation(s)
| | | | - Joseph E Arnold
- School of Chemistry, University of Southampton, University Road, Southampton SO17 1BJ, U.K
| | - Mathieu Morency
- Département de Chimie, Université de Montréal, Montréal, Québec H2V 0B3, Canada
| | - Daniel Chartrand
- Département de Chimie, Université de Montréal, Montréal, Québec H2V 0B3, Canada
| | - Thierry Maris
- Département de Chimie, Université de Montréal, Montréal, Québec H2V 0B3, Canada
| | - Gilles Berger
- Microbiologie, Chimie bioorganique et macromoléculaire, Faculté de Pharmacie, Université libre de Bruxelles (ULB), Boulevard du Triomphe, Bruxelles 1050, Belgium
| | - Graeme M Day
- School of Chemistry, University of Southampton, University Road, Southampton SO17 1BJ, U.K
| | - Stephen Hanessian
- Département de Chimie, Université de Montréal, Montréal, Québec H2V 0B3, Canada
| | - James D Wuest
- Département de Chimie, Université de Montréal, Montréal, Québec H2V 0B3, Canada
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22
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Abramov YA, Sun G, Zeng Q. Emerging Landscape of Computational Modeling in Pharmaceutical Development. J Chem Inf Model 2022; 62:1160-1171. [PMID: 35226809 DOI: 10.1021/acs.jcim.1c01580] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Computational chemistry applications have become an integral part of the drug discovery workflow over the past 35 years. However, computational modeling in support of drug development has remained a relatively uncharted territory for a significant part of both academic and industrial communities. This review considers the computational modeling workflows for three key components of drug preclinical and clinical development, namely, process chemistry, analytical research and development, as well as drug product and formulation development. An overview of the computational support for each step of the respective workflows is presented. Additionally, in context of solid form design, special consideration is given to modern physics-based virtual screening methods. This covers rational approaches to polymorph, coformer, counterion, and solvent virtual screening in support of solid form selection and design.
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Affiliation(s)
- Yuriy A Abramov
- XtalPi, Inc., 245 Main St., Cambridge, Massachusetts 02142, United States.,Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Guangxu Sun
- XtalPi, Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 Hongliu road, Fubao Community, Fubao Street, Futian District, Shenzhen 518100, China
| | - Qun Zeng
- XtalPi, Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 Hongliu road, Fubao Community, Fubao Street, Futian District, Shenzhen 518100, China
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23
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Baraboshkin NM, Zelenov VP, Minyaev ME, Pivina TS. Quest: structure and properties of BTF–nitrobenzene cocrystals with different ratios of components. CrystEngComm 2022. [DOI: 10.1039/d1ce00977j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using the methods of quantum chemistry and AAP, the structure of BTF cocrystals with nitrobenzene, 1,2-, 1,3-, 1,4-dinitrobenzene, 1,3,5-trinitrobenzene, and hexanitrobenzene with different ratios of components (1 : 1, 1 : 2, 1 : 3, 2 : 1, 3 : 1) is modeled.
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Affiliation(s)
- Nikita M. Baraboshkin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp, Moscow 119991, Russian Federation
| | - Victor P. Zelenov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp, Moscow 119991, Russian Federation
| | - Mikhail E. Minyaev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp, Moscow 119991, Russian Federation
| | - Tatyana S. Pivina
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp, Moscow 119991, Russian Federation
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24
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Aldum JC, Jones I, McGonigal PR, Spagnoli D, Stapleton ND, Turner GF, Moggach SA. The structure of methanol at 5.09 GPa: the fortuitous formation of a new high-pressure phase. CrystEngComm 2022. [DOI: 10.1039/d2ce01157c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The crystal structure of a new polymorph of methanol (the ε polymorph) has been determined at 5.09 GPa by single crystal X-ray diffraction.
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Affiliation(s)
- J. Collen Aldum
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, 6009, Western Australia, Australia
| | - Isabelle Jones
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, 6009, Western Australia, Australia
| | - Paul R. McGonigal
- Department of Chemistry, Durham University, Stockton Road, Durham, DH1 3LE, UK
| | - Dino Spagnoli
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, 6009, Western Australia, Australia
| | - Nicholas D. Stapleton
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, 6009, Western Australia, Australia
| | - Gemma F. Turner
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, 6009, Western Australia, Australia
| | - Stephen A. Moggach
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, 6009, Western Australia, Australia
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25
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Sun L, Zhu W, Zhang X, Li L, Dong H, Hu W. Creating Organic Functional Materials beyond Chemical Bond Synthesis by Organic Cocrystal Engineering. J Am Chem Soc 2021; 143:19243-19256. [PMID: 34730972 DOI: 10.1021/jacs.1c07678] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Organic cocrystal engineering refers to two or more organic molecules stoichiometrically combined and held together by noncovalent intermolecular interactions, which differs from standard chemical synthesis involving covalent bond breakage and formation. Organic cocrystals have unique properties and offer a new strategy for creating enhanced organics. First, however, some key questions need to be addressed: How do diverse monomers affect the intermolecular interaction kinetics during cocrystallization? How do the intermolecular forces in cocrystals affect cocrystal functions? In this Perspective, the definition and advantages of organic cocrystal engineering, specifically in the construction of a reliable intermolecular interaction-stacking structure-performance relationship, are outlined. Additionally, recent developments in the field and the questions above are discussed. Finally, a brief conclusion and some hints on likely future developments are provided.
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Affiliation(s)
- Lingjie Sun
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou 350207, China.,Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Weigang Zhu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Xiaotao Zhang
- Institute of Molecular Aggregation Science of Tianjin University, Tianjin 300072, China
| | - Liqiang Li
- Institute of Molecular Aggregation Science of Tianjin University, Tianjin 300072, China
| | - Huanli Dong
- Chinese Academy of Key Laboratory of Organic Solids, Institute of Chemistry Sciences, Beijing 100190, China
| | - Wenping Hu
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou 350207, China.,Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
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26
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Kralj M, Lukin S, Miletić G, Halasz I. Using Desmotropes, Cocrystals, and Salts to Manipulate Reactivity in Mechanochemical Organic Reactions. J Org Chem 2021; 86:14160-14168. [PMID: 34493040 DOI: 10.1021/acs.joc.1c01817] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Performing reactions in the solid state offers the largely unexplored possibility of influencing reactivity by manipulating the solid form of the starting reactants. In this work, we explore the use of various solid forms of barbituric acid and its effect on reaction paths and kinetics in a Knoevenagel condensation reaction with vanillin. Modifications of barbituric acid included the use of its desmotrope, a cocrystal, and a salt as the starting reactant. Comparing these reactions with the reaction starting from the commercial keto tautomer of barbituric acid, we find that the reaction kinetics could be accelerated or decelerated, together with a change in the reaction mechanism. Exploring solid forms of reactants can be used as general methodology for manipulating mechanochemical reactivity, further highlighting the benefits of conducting reactions in the solid state, because many of the modifications of solids become unavailable upon dissolution.
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Affiliation(s)
- Magdalena Kralj
- Ruđer Bošković Institute, Bijenička c.54, 10000 Zagreb, Croatia
| | - Stipe Lukin
- Ruđer Bošković Institute, Bijenička c.54, 10000 Zagreb, Croatia
| | - Goran Miletić
- Ruđer Bošković Institute, Bijenička c.54, 10000 Zagreb, Croatia
| | - Ivan Halasz
- Ruđer Bošković Institute, Bijenička c.54, 10000 Zagreb, Croatia
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27
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Jiang Y, Yang Z, Guo J, Li H, Liu Y, Guo Y, Li M, Pu X. Coupling complementary strategy to flexible graph neural network for quick discovery of coformer in diverse co-crystal materials. Nat Commun 2021; 12:5950. [PMID: 34642333 PMCID: PMC8511140 DOI: 10.1038/s41467-021-26226-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 09/23/2021] [Indexed: 11/21/2022] Open
Abstract
Cocrystal engineering have been widely applied in pharmaceutical, chemistry and material fields. However, how to effectively choose coformer has been a challenging task on experiments. Here we develop a graph neural network (GNN) based deep learning framework to quickly predict formation of the cocrystal. In order to capture main driving force to crystallization from 6819 positive and 1052 negative samples reported by experiments, a feasible GNN framework is explored to integrate important prior knowledge into end-to-end learning on the molecular graph. The model is strongly validated against seven competitive models and three challenging independent test sets involving pharmaceutical cocrystals, π-π cocrystals and energetic cocrystals, exhibiting superior performance with accuracy higher than 96%, confirming its robustness and generalization. Furthermore, one new energetic cocrystal predicted is successfully synthesized, showcasing high potential of the model in practice. All the data and source codes are available at https://github.com/Saoge123/ccgnet for aiding cocrystal community.
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Affiliation(s)
- Yuanyuan Jiang
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Zongwei Yang
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621900, China
| | - Jiali Guo
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Hongzhen Li
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621900, China
| | - Yijing Liu
- College of Computer Science, Sichuan University, Chengdu, 610064, China
| | - Yanzhi Guo
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Menglong Li
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xuemei Pu
- College of Chemistry, Sichuan University, Chengdu, 610064, China.
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28
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Chovnik O, Cohen SR, Pinkas I, Houben L, Gorelik TE, Feldman Y, Shimon LJW, Iron MA, Lahav M, van der Boom ME. Noncovalent Bonding Caught in Action: From Amorphous to Cocrystalline Molecular Thin Films. ACS NANO 2021; 15:14643-14652. [PMID: 34516094 DOI: 10.1021/acsnano.1c04355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We demonstrate the solvent-free amorphous-to-cocrystalline transformations of nanoscale molecular films. Exposing amorphous films to vapors of a haloarene results in the formation of a cocrystalline coating. This transformation proceeds by gradual strengthening of halogen-bonding interactions as a result of the crystallization process. The gas-solid diffusion mechanism involves formation of an amorphous metastable phase prior to crystallization of the films. In situ optical microscopy shows mass transport during this process, which is confirmed by cross-section analysis of the final structures using focused ion beam milling combined with scanning electron microscopy. Nanomechanical measurements show that the rigidity of the amorphous films influences the crystallization process. This surface transformation results in molecular arrangements that are not readily obtained through other means. Cocrystals grown in solution crystallize in a monoclinic centrosymmetric space group, whereas the on-surface halogen-bonded assembly crystallizes into a noncentrosymmetric material with a bulk second-order nonlinear optical response.
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Affiliation(s)
- Olga Chovnik
- Department of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Sidney R Cohen
- Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Iddo Pinkas
- Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Lothar Houben
- Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Tatiana E Gorelik
- Electron Microscopy Group of Materials Science, Ulm University, Ulm 89081, Germany
| | - Yishay Feldman
- Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Linda J W Shimon
- Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Mark A Iron
- Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Michal Lahav
- Department of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Milko E van der Boom
- Department of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 7610001, Israel
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29
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Affiliation(s)
- Alessia Bacchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma, Parma, Italy
- Biopharmanet-TEC, Università degli studi di Parma, Parma, Italy
| | - Paolo Pio Mazzeo
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma, Parma, Italy
- Biopharmanet-TEC, Università degli studi di Parma, Parma, Italy
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30
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Feliciano IO, Silva DP, Piedade MFM, Bernardes CES, Minas da Piedade ME. First and Second Dissociation Enthalpies in Bi-Component Crystals Consisting of Maleic Acid and L-Phenylalanine. Molecules 2021; 26:molecules26185714. [PMID: 34577186 PMCID: PMC8469174 DOI: 10.3390/molecules26185714] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 09/09/2021] [Accepted: 09/14/2021] [Indexed: 11/16/2022] Open
Abstract
The energetics of the stepwise dissociation of a A:B2 bi-component crystal, according to A:B2(cr) → A:B(cr) + B(cr) and A:B(cr) → A(cr) + B(cr), was investigated using MA:Phe2 and MA:Phe (MA = maleic acid; Phe = L-phenylalanine) as model systems. The enthalpy changes associated with these sequential processes and with the overall dissociation reaction A:B2(cr) → A(cr) + 2B(cr) were determined by solution calorimetry. It was found that they are all positive, indicating that there is a lattice enthalpy gain when MA:Phe2 is formed, either from the individual precursors or by adding Phe to MA:Phe. Single-crystal X-ray diffraction (SCXRD) analysis showed that MA:Phe2 is best described as a protic salt containing a maleate anion (MA−) and two non-equivalent L-phenylalanine units, both linked to MA− by NH···O hydrogen bonds (H-bond): one of these units is protonated (HPhe+) and the other zwitterionic (Phe±). Only MA− and HPhe+ molecules are present in the MA:Phe lattice. In this case, however, NH···O and OH···O H-bonds are formed between each MA− unit and two HPhe+ molecules. Despite these structural differences, the enthalpy cost for the removal of the zwitterionic Phe± unit from the MA:Phe2 lattice to yield MA:Phe is only 0.9 ± 0.4 kJ mol−1 higher than that for the dissociation of MA:Phe, which requires a proton transfer from HPhe+ to MA− and the rearrangement of L-phenylalanine to the zwitterionic, Phe±, form. Finally, a comparison of the dissociation energetics and structures of MA:Phe and of the previously reported glycine maleate (MA:Gly) analogue indicated that parameters, such as the packing coefficient, density, hydrogen bonds formed, or fusion temperature, are not necessarily good descriptors of dissociation enthalpy or lattice enthalpy trends when bi-component crystals with different molecular composition are being compared, even if the stoichiometry is the same.
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Affiliation(s)
- Inês O. Feliciano
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal; (I.O.F.); (C.E.S.B.)
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal;
| | - Daniela P. Silva
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal;
| | - M. Fátima M. Piedade
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal;
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal;
| | - Carlos E. S. Bernardes
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal; (I.O.F.); (C.E.S.B.)
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal;
| | - Manuel E. Minas da Piedade
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal; (I.O.F.); (C.E.S.B.)
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal;
- Correspondence: ; Tel.: +351-217500005
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31
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Bairagi KM, Ingle KS, Bhowal R, Mohurle SA, Hasija A, Alwassil OI, Venugopala KN, Chopra D, Nayak SK. Interplay of Halogen and Hydrogen Bonding through Co-Crystallization in Pharmacologically Active Dihydropyrimidines: Insights from Crystal Structure and Energy Framework. Chempluschem 2021; 86:1167-1176. [PMID: 34409757 DOI: 10.1002/cplu.202100259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 07/31/2021] [Indexed: 11/05/2022]
Abstract
A solvent-assisted grinding method has been used to prepare co-crystals in substituted dihydropyrimidines (DHPM) that constitutes pharmacologically active compounds. These were characterized using FT-IR, PXRD, and single-crystal X-ray diffraction. In order to explore the possibility of formation of halogen (XB) and hydrogen bonding (HB) synthons in the solid state, co-crystallization attempts of differently substituted DHPM molecules, containing nitro, hydoxy, and chloro substituents, with different co-formers, such as 1,4-diiodo tetrafluorobenzene (1,4 DITFB) and 3-nitrobenzoic acid (3 NBA) were performed. The XB co-crystals (C2aXB, C2bXB, and C2cXB) prefer the formation of C-I⋅⋅⋅O/C-I⋅⋅⋅S XB synthon, whereas the HB co-crystal (C2dHB) is stabilized by N-H⋅⋅⋅O H-bond formation. Hirshfeld surface analysis revealed that the percentage contribution of intermolecular interactions for XB co-crystals prefer equal contribution of XB synthon along with HB synthon. Furthermore, the interaction energy was analyzed using energy frameworks, which suggests that their stability, a combination of electrostatics and dispersion, is enhanced through XB/HB in comparison to the parent DHPMs.
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Affiliation(s)
- Keshab M Bairagi
- Department of Chemistry, Institution Visvesvaraya National Institute of Technology, Nagpur Address Nagpur, 440010, Maharashtra, India
| | - Kapil S Ingle
- Department of Chemistry, Institution Visvesvaraya National Institute of Technology, Nagpur Address Nagpur, 440010, Maharashtra, India
| | - Rohit Bhowal
- Department of Chemistry, Institution Indian Institute of Science Education and Research Bhopal Address Bhopal, Bhauri, Bhopal 462023, India
| | - Smital A Mohurle
- Department of Chemistry, Institution Visvesvaraya National Institute of Technology, Nagpur Address Nagpur, 440010, Maharashtra, India
| | - Avantika Hasija
- Department of Chemistry, Institution Indian Institute of Science Education and Research Bhopal Address Bhopal, Bhauri, Bhopal 462023, India
| | - Osama I Alwassil
- Department of Pharmaceutical Sciences, King Saud bin Abdulaziz University for health sciences, Riyadh, 11481, Kingdom of Saudi Arabia
| | - Katharigatta N Venugopala
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia.,Department of Biotechnology and Food Technology, Durban University of Technology, Durban, Durban, 4001, South Africa.,Department of Pharmaceutical Sciences College of Clinical Pharmacy King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia.,Department of Biotechnology and Food Technology, Durban University of Technology, Durban, Durban, 4001, South Africa
| | - Deepak Chopra
- Department of Chemistry, Institution Indian Institute of Science Education and Research Bhopal Address Bhopal, Bhauri, Bhopal 462023, India
| | - Susanta K Nayak
- Department of Chemistry, Institution Visvesvaraya National Institute of Technology, Nagpur Address Nagpur, 440010, Maharashtra, India
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32
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Huang Y, Zhan LW, Zhang Q, Hou J, Li BD. Theoretical research on cage-like furazan-based energetic compounds and its derivatives. J Mol Model 2021; 27:243. [PMID: 34373949 DOI: 10.1007/s00894-021-04849-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 07/05/2021] [Indexed: 10/20/2022]
Abstract
In this manuscript, we reported the design and prediction of two furazan-based cage-like molecules and their derivatives using density function theory (DFT). The heat formation and detonation properties were calculated using Hess's law and Kamlet-Jacobs equations with the B3PW91 method. The molecular stability and geometry were analyzed using the M06-2X method, and molecular crystal structures were predicted based on Monte Carlo simulation, while chemical reactive sites were judged using the PBE0 method based on Fukui function. The theoretical calculation result proved that the designed molecules exhibit ideal symmetric cage-like geometry and show superior physicochemical and detonation properties. Compared with traditional energetic materials, the designed molecules display more positive solid heat formation and lower sensitivity. The designed molecules could be considered promising high energy density material candidates with potential synthesis and application value. Two designed molecules display superior detonation performance and ideal completely symmetric cage-like geometry, which were proved theoretically as a promising HEDM candidate. A series of derivatives also exhibited excellent crystal density and physicochemical properties, while with more stable structure.
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Affiliation(s)
- Yan Huang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Le-Wu Zhan
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Qian Zhang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Jing Hou
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - Bin-Dong Li
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
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33
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Ng ZX, Tan D, Teo WL, León F, Shi X, Sim Y, Li Y, Ganguly R, Zhao Y, Mohamed S, García F. Mechanosynthesis of Higher‐Order Cocrystals: Tuning Order, Functionality and Size in Cocrystal Design**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zi Xuan Ng
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Davin Tan
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Wei Liang Teo
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Felix León
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Xiaoyan Shi
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
- School of Materials and Energy Guangdong University of Technology Guangzhou 510006 Guangdong P. R. China
| | - Ying Sim
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Yongxin Li
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Rakesh Ganguly
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
- Department of Chemistry Shiv Nadar University NH91, Tehsil Dadri, Gautam Buddha Nagard 201314 Uttar Pradesh India
| | - Yanli Zhao
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Sharmarke Mohamed
- Department of Chemistry Green Chemistry & Materials Modelling Laboratory Khalifa University of Science and Technology P.O. Box 127788 Abu Dhabi United Arab Emirates
| | - Felipe García
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
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34
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Ng ZX, Tan D, Teo WL, León F, Shi X, Sim Y, Li Y, Ganguly R, Zhao Y, Mohamed S, García F. Mechanosynthesis of Higher-Order Cocrystals: Tuning Order, Functionality and Size in Cocrystal Design*. Angew Chem Int Ed Engl 2021; 60:17481-17490. [PMID: 33982390 PMCID: PMC8362154 DOI: 10.1002/anie.202101248] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Indexed: 01/18/2023]
Abstract
The ability to rationally design and predictably construct crystalline solids has been the hallmark of crystal engineering research. To date, numerous examples of multicomponent crystals comprising organic molecules have been reported. However, the crystal engineering of cocrystals comprising both organic and inorganic chemical units is still poorly understood and mostly unexplored. Here, we report a new diverse set of higher-order cocrystals (HOCs) based on the structurally versatile-yet largely unexplored-phosph(V/V)azane heterosynthon building block. The novel ternary and quaternary cocrystals reported are held together by synergistic and orthogonal intermolecular interactions. Notably, the HOCs can be readily obtained either via sequential or one-pot mechanochemical methods. Computational modelling methods reveal that the HOCs are thermodynamically driven to form and that their mechanical properties strongly depend on the composition and intermolecular forces in the crystal, offering untapped potential for optimizing material properties.
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Affiliation(s)
- Zi Xuan Ng
- School of Physical and Mathematical SciencesDivision of Chemistry and Biological ChemistryNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Davin Tan
- School of Physical and Mathematical SciencesDivision of Chemistry and Biological ChemistryNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Wei Liang Teo
- School of Physical and Mathematical SciencesDivision of Chemistry and Biological ChemistryNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Felix León
- School of Physical and Mathematical SciencesDivision of Chemistry and Biological ChemistryNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Xiaoyan Shi
- School of Physical and Mathematical SciencesDivision of Chemistry and Biological ChemistryNanyang Technological University21 Nanyang Link637371SingaporeSingapore
- School of Materials and EnergyGuangdong University of TechnologyGuangzhou510006GuangdongP. R. China
| | - Ying Sim
- School of Physical and Mathematical SciencesDivision of Chemistry and Biological ChemistryNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Yongxin Li
- School of Physical and Mathematical SciencesDivision of Chemistry and Biological ChemistryNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Rakesh Ganguly
- School of Physical and Mathematical SciencesDivision of Chemistry and Biological ChemistryNanyang Technological University21 Nanyang Link637371SingaporeSingapore
- Department of ChemistryShiv Nadar UniversityNH91, Tehsil Dadri, Gautam Buddha Nagard201314Uttar PradeshIndia
| | - Yanli Zhao
- School of Physical and Mathematical SciencesDivision of Chemistry and Biological ChemistryNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Sharmarke Mohamed
- Department of ChemistryGreen Chemistry & Materials Modelling LaboratoryKhalifa University of Science and TechnologyP.O. Box 127788Abu DhabiUnited Arab Emirates
| | - Felipe García
- School of Physical and Mathematical SciencesDivision of Chemistry and Biological ChemistryNanyang Technological University21 Nanyang Link637371SingaporeSingapore
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35
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Huang X, Lv D, Ai LQ, Cheng SH, Yao X. Aggregate Engineering in Supramolecular Polymers via Extensive Non-covalent Networks. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2608-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Christopher IL, Michalchuk AAL, Pulham CR, Morrison CA. Towards Computational Screening for New Energetic Molecules: Calculation of Heat of Formation and Determination of Bond Strengths by Local Mode Analysis. Front Chem 2021; 9:726357. [PMID: 34354982 PMCID: PMC8329490 DOI: 10.3389/fchem.2021.726357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 07/02/2021] [Indexed: 11/13/2022] Open
Abstract
The reliable determination of gas-phase and solid-state heats of formation are important considerations in energetic materials research. Herein, the ability of PM7 to calculate the gas-phase heats of formation for CNHO-only and inorganic compounds has been critically evaluated, and for the former, comparisons drawn with isodesmic equations and atom equivalence methods. Routes to obtain solid-state heats of formation for a range of single-component molecular solids, salts, and co-crystals were also evaluated. Finally, local vibrational mode analysis has been used to calculate bond length/force constant curves for seven different chemical bonds occurring in CHNO-containing molecules, which allow for rapid identification of the weakest bond, opening up great potential to rationalise decomposition pathways. Both metrics are important tools in rationalising the design of new energetic materials through computational screening processes.
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Affiliation(s)
- Imogen L Christopher
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, United Kingdom
| | | | - Colin R Pulham
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, United Kingdom
| | - Carole A Morrison
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, United Kingdom
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37
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Bragança AM, Minoia A, Steeno R, Seibel J, Hirsch BE, Verstraete L, Ivasenko O, Müllen K, Mali KS, Lazzaroni R, De Feyter S. Detection and Stabilization of a Previously Unknown Two-Dimensional (Pseudo)polymorph using Lateral Nanoconfinement. J Am Chem Soc 2021; 143:11080-11087. [PMID: 34283574 DOI: 10.1021/jacs.1c04445] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report on the detection and stabilization of a previously unknown two-dimensional (2D) pseudopolymorph of an alkoxy isophthalic acid using lateral nanoconfinement. The self-assembled molecular networks formed by the isophthalic acid derivative were studied at the interface between covalently modified graphite and an organic solvent. When self-assembled on graphite with moderate surface coverage of covalently bound aryl groups, a previously unknown metastable pseudopolymorph was detected. This pseudopolymorph, which was presumably "trapped" in between the surface bound aryl groups, underwent a time-dependent phase transition to the stable polymorph typically observed on pristine graphite. The stabilization of the pseudopolymorph was then achieved by using an alternative nanoconfinement strategy, where the domains of the pseudopolymorph could be formed and stabilized by restricting the self-assembly in nanometer-sized shallow compartments produced by STM-based nanolithography carried out on a graphite surface with a high density of covalently bound aryl groups. These experimental results are supported by molecular mechanics and molecular dynamics simulations, which not only provide important insight into the relative stabilities of the different structures, but also shed light onto the mechanism of the formation and stabilization of the pseudopolymorph under nanoscopic lateral confinement.
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Affiliation(s)
- Ana M Bragança
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Andrea Minoia
- Laboratory for Chemistry of Novel Materials, Materials Research Institute, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Roelof Steeno
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Johannes Seibel
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Brandon E Hirsch
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Lander Verstraete
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Oleksandr Ivasenko
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Kunal S Mali
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Roberto Lazzaroni
- Laboratory for Chemistry of Novel Materials, Materials Research Institute, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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38
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Kendall T, Stratford S, Patterson AR, Lunt RA, Cruickshank D, Bonnaud T, Scott CD. An industrial perspective on co-crystals: Screening, identification and development of the less utilised solid form in drug discovery and development. PROGRESS IN MEDICINAL CHEMISTRY 2021; 60:345-442. [PMID: 34147205 DOI: 10.1016/bs.pmch.2021.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Active pharmaceutical ingredients are commonly marketed as a solid form due to ease of transport, storage and administration. In the design of a drug formulation, the selection of the solid form is incredibly important and is traditionally based on what polymorphs, hydrates or salts are available for that compound. Co-crystals, another potential solid form available, are currently not as readily considered as a viable solid form for the development process. Even though co-crystals are gaining an ever-increasing level of interest within the pharmaceutical community, their acceptance and application is still not as standard as other solid forms such as the ubiquitous pharmaceutical salt and stabilised amorphous formulations. Presented in this chapter is information that would allow for a co-crystal screen to be planned and conducted as well as scaled up using solution and mechanochemistry based methods commonly employed in both the literature and industry. Also presented are methods for identifying the formation of a co-crystal using a variety of analytical techniques as well as the importance of confirming the formation of co-crystals from a legal perspective and demonstrating the legal precedent by looking at co-crystalline products already on the market. The benefits of co-crystals have been well established, and presented in this chapter are a selection of examples which best exemplify their potential. The goal of this chapter is to increase the understanding of co-crystals and how they may be successfully exploited in early stage development.
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Affiliation(s)
- Thomas Kendall
- Technobis Crystallization Systems, Alkmaar, The Netherlands.
| | - Sam Stratford
- Johnson Matthey, Pharmorphix, Cambridge, United Kingdom
| | | | - Ruth A Lunt
- Johnson Matthey, Pharmorphix, Cambridge, United Kingdom
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Devogelaer JJ, Charpentier MD, Tijink A, Dupray V, Coquerel G, Johnston K, Meekes H, Tinnemans P, Vlieg E, ter Horst JH, de Gelder R. Cocrystals of Praziquantel: Discovery by Network-Based Link Prediction. CRYSTAL GROWTH & DESIGN 2021; 21:3428-3437. [PMID: 34276256 PMCID: PMC8276530 DOI: 10.1021/acs.cgd.1c00211] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/07/2021] [Indexed: 06/13/2023]
Abstract
Cocrystallization has been promoted as an attractive early development tool as it can change the physicochemical properties of a target compound and possibly enable the purification of single enantiomers from racemic compounds. In general, the identification of adequate cocrystallization candidates (or coformers) is troublesome and hampers the exploration of the solid-state landscape. For this reason, several computational tools have been introduced over the last two decades. In this study, cocrystals of Praziquantel (PZQ), an anthelmintic drug used to treat schistosomiasis, are predicted with network-based link prediction and experimentally explored. Single crystals of 12 experimental cocrystal indications were grown and subjected to a structural analysis with single-crystal X-ray diffraction. This case study illustrates the power of the link-prediction approach and its ability to suggest a diverse set of new coformer candidates for a target compound when starting from only a limited number of known cocrystals.
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Affiliation(s)
- Jan-Joris Devogelaer
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Maxime D. Charpentier
- EPSRC
Centre for Innovative Manufacturing in Continuous Manufacturing and
Crystallization (CMAC), Strathclyde Institute of Pharmacy and Biomedical
Sciences (SIPBS), Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, United Kingdom
| | - Arnoud Tijink
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Valérie Dupray
- Laboratoire
Sciences et Méthodes Séparatives, Normandie Univ, UNIROUEN, SMS, 76000 Rouen, France
| | - Gérard Coquerel
- Laboratoire
Sciences et Méthodes Séparatives, Normandie Univ, UNIROUEN, SMS, 76000 Rouen, France
| | - Karen Johnston
- Department
of Chemical and Process Engineering, University
of Strathclyde, 75 Montrose Street, Glasgow G1 1XJ, United Kingdom
| | - Hugo Meekes
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Paul Tinnemans
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Elias Vlieg
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Joop H. ter Horst
- EPSRC
Centre for Innovative Manufacturing in Continuous Manufacturing and
Crystallization (CMAC), Strathclyde Institute of Pharmacy and Biomedical
Sciences (SIPBS), Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, United Kingdom
- Laboratoire
Sciences et Méthodes Séparatives, Normandie Univ, UNIROUEN, SMS, 76000 Rouen, France
| | - René de Gelder
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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40
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In-silico methods of cocrystal screening: A review on tools for rational design of pharmaceutical cocrystals. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102527] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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41
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Xu L, Li Y, Jing P, Xu G, Zhou Q, Cai Y, Deng X. Terahertz spectroscopic characterizations and DFT calculations of indomethacin cocrystals with nicotinamide and saccharin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 249:119309. [PMID: 33341744 DOI: 10.1016/j.saa.2020.119309] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/30/2020] [Accepted: 12/03/2020] [Indexed: 06/12/2023]
Abstract
Co-crystallization is an effective strategy to improve the drug properties such as solubility and stability. However, its thermodynamic backgrounds, especially lattice vibration, haven't been fully understood. In this work, indomethacin (IND) cocrystals formed with nicotinamide (NIC) and saccharin (SAC) are successfully characterized by using terahertz spectroscopy. DFT calculations at PBE-D3 level with and without constrained unit cell are performed to predict the absorption peaks at spectral range. The results suggest that the DFT calculations with constrained unit cell achieve a better agreement with experimental observations. Based on the optimized geometries and calculated phonons, the thermodynamic contributions from lattice vibrations to cocrystal formations are further evaluated. The findings reveal that the vibrational energy plays a comparable role with electronic energy, but has an opposite impact on these two cocrystal formations.
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Affiliation(s)
- Li Xu
- Department of Chemical Engineering and Technology, School of Chemistry, Biology and Materials Science, East China University of Technology, Guanglan Avenue 418, Nanchang City 330013, China
| | - Yin Li
- Department of Physics, School of Sciences, Nanchang University, Xuefu Avenue 999, Nanchang City 330031, China.
| | - Peixin Jing
- Department of Chemical Engineering and Technology, School of Chemistry, Biology and Materials Science, East China University of Technology, Guanglan Avenue 418, Nanchang City 330013, China
| | - Guohao Xu
- Department of Chemical Engineering and Technology, School of Chemistry, Biology and Materials Science, East China University of Technology, Guanglan Avenue 418, Nanchang City 330013, China
| | - Qi Zhou
- Department of Physics, School of Sciences, Nanchang University, Xuefu Avenue 999, Nanchang City 330031, China
| | - Yingxiang Cai
- Department of Physics, School of Sciences, Nanchang University, Xuefu Avenue 999, Nanchang City 330031, China
| | - Xiaohua Deng
- Department of Physics, School of Sciences, Nanchang University, Xuefu Avenue 999, Nanchang City 330031, China; Institute of Space Science and Technology, Nanchang University, Xuefu Avenue 999, Nanchang City 330031, China
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42
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Cho HJ, Kim KS, Kim H, Kim T, Malyutin AG, Rees DC, Yoo BK, Song C. Microcrystal Electron Diffraction Elucidates Water-Specific Polymorphism-Induced Emission Enhancement of Bis-arylacylhydrazone. ACS APPLIED MATERIALS & INTERFACES 2021; 13:7546-7555. [PMID: 33544590 DOI: 10.1021/acsami.0c21248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Aggregation-induced emission (AIE) phenomena have gained intense interest over the last decades because of its importance in solid-state emission. However, the elucidation of a working mechanism is difficult owing to the limited characterization methods on solid-state molecules, further complicated if dynamic structural changes occur. Here, a series of bis-arylacylhydrazones (BAHs) were synthesized, for which their AIE properties are only turned on by the reversible adsorption of water molecules. We used microcrystal electron diffraction (MicroED) to determine the molecular structures of two BAHs directly from bulk powders (without attempting to grow crystals) prepared in the absence or presence of water adsorption. This study reveals the unambiguous characterization of the dependence of crystal packing on the specific cocrystallization with hydrates. The structural analysis demonstrates that water molecules form strong hydrogen bonds with three neighboring BAH-1, resulting in the almost complete planarization and restriction of the intramolecular rotation of the molecule. MicroED plays an important role in providing a decisive clue for the reversible polymorphism changes induced by the adsorption of water molecules, regulating emissive properties.
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Affiliation(s)
- Hye Jin Cho
- Department of Chemistry, Sungkyunkwan University, 2066 Seobu-ro, Janan-gu, Suwon-si, Gyeonggi-do 16419 Republic of Korea
| | - Kyung-Su Kim
- Department of Chemistry, Sungkyunkwan University, 2066 Seobu-ro, Janan-gu, Suwon-si, Gyeonggi-do 16419 Republic of Korea
| | - Hyunwoo Kim
- Department of Chemistry, Sungkyunkwan University, 2066 Seobu-ro, Janan-gu, Suwon-si, Gyeonggi-do 16419 Republic of Korea
| | - Taewoo Kim
- Department of Chemistry, Sungkyunkwan University, 2066 Seobu-ro, Janan-gu, Suwon-si, Gyeonggi-do 16419 Republic of Korea
| | - Andrey G Malyutin
- Beckman Institute, California Institute of Technology, Pasadena, CA 91125, United States
| | - Douglas C Rees
- HHMI, California Institute of Technology, Pasadena, CA 91125, United States
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Byung-Kuk Yoo
- HHMI, California Institute of Technology, Pasadena, CA 91125, United States
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Changsik Song
- Department of Chemistry, Sungkyunkwan University, 2066 Seobu-ro, Janan-gu, Suwon-si, Gyeonggi-do 16419 Republic of Korea
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43
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Cocrystals Based on 4,4’-bipyridine: Influence of Crystal Packing on Melting Point. CRYSTALS 2021. [DOI: 10.3390/cryst11020191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The reactions of piperonylic acid (HPip) and cinnamic acid (HCinn) with 4,4’-bipyridine (4,4’-bipy) have been assayed using the same synthetic methodology, yielding two binary cocrystals with different acid:4,4’-bipy molar ratios, (HPip)(4,4’-bipy) (1) and (HCinn)2(4,4’-bipy) (2). The melting point (m.p.) of these cocrystals have been measured and a remarkable difference (ΔT ≈ 78 °C) between them was observed. Moreover, the two cocrystals have been characterized by powder X-ray diffraction (PXRD), elemental analysis (EA), FTIR-ATR, 1H NMR spectroscopies, and single-crystal X-ray diffraction. The study of their structural packings via Hirshfeld surface analysis and energy frameworks revealed the important contribution of the π···π and C-H···π interactions to the formation of different structural packing motifs, this being the main reason for the difference of m.p. between them. Moreover, it has been observed that 1 and 2 presented the same packing motifs as the crystal structure of their corresponding carboxylic acids, but 1 and 2 showed lower m.p. than those of the carboxylic acids, which could be related to the lower strength of the acid-pyridine heterosynthons respect to the acid-acid homosynthons in the crystal structures.
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44
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Cocrystal Prediction Using Machine Learning Models and Descriptors. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11031323] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cocrystals are of much interest in industrial application as well as academic research, and screening of suitable coformers for active pharmaceutical ingredients is the most crucial and challenging step in cocrystal development. Recently, machine learning techniques are attracting researchers in many fields including pharmaceutical research such as quantitative structure-activity/property relationship. In this paper, we develop machine learning models to predict cocrystal formation. We extract descriptor values from simplified molecular-input line-entry system (SMILES) of compounds and compare the machine learning models by experiments with our collected data of 1476 instances. As a result, we found that artificial neural network shows great potential as it has the best accuracy, sensitivity, and F1 score. We also found that the model achieved comparable performance with about half of the descriptors chosen by feature selection algorithms. We believe that this will contribute to faster and more accurate cocrystal development.
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45
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Zohari N, Mohammadkhani FG, Montazeri M, Roosta ST, Hosseini SG, Zaree MA. Synthesis and Characterization of a Novel Explosive HMX/BTNEN (2 : 1) Cocrystal. PROPELLANTS EXPLOSIVES PYROTECHNICS 2021. [DOI: 10.1002/prep.202000202] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Narges Zohari
- Faculty of Chemistry and Chemical Engineering Malek Ashtar University of Technology Tehran Iran
| | | | - Mahnaz Montazeri
- Faculty of Chemistry and Chemical Engineering Malek Ashtar University of Technology Tehran Iran
| | - Saeed Tavangar Roosta
- Faculty of Chemistry and Chemical Engineering Malek Ashtar University of Technology Tehran Iran
| | - Seyed Ghorban Hosseini
- Faculty of Chemistry and Chemical Engineering Malek Ashtar University of Technology Tehran Iran
| | - Mohammad Ali Zaree
- Faculty of Chemistry and Chemical Engineering Malek Ashtar University of Technology Tehran Iran
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46
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Arhangelskis M, Bučar DK, Bordignon S, Chierotti MR, Stratford SA, Voinovich D, Jones W, Hasa D. Mechanochemical reactivity inhibited, prohibited and reversed by liquid additives: examples from crystal-form screens. Chem Sci 2021; 12:3264-3269. [PMID: 34164095 PMCID: PMC8179350 DOI: 10.1039/d0sc05071g] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 12/28/2020] [Indexed: 12/20/2022] Open
Abstract
We demonstrate that liquid additives can exert inhibitive or prohibitive effects on the mechanochemical formation of multi-component molecular crystals, and report that certain additives unexpectedly prompt the dismantling of such solids into physical mixtures of their constituents. Computational methods were employed in an attempt to identify possible reasons for these previously unrecognised effects of liquid additives on mechanochemical transformations.
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Affiliation(s)
- Mihails Arhangelskis
- Faculty of Chemistry, University of Warsaw 1 Pasteura Street Warsaw 02-093 Poland
| | - Dejan-Krešimir Bučar
- Department of Chemistry, University College London 20 Gordon Street London WC1H 0AJ UK
| | - Simone Bordignon
- Department of Chemistry and NIS Centre, University of Turin Via Giuria 7 Torino 10125 Italy
| | - Michele R Chierotti
- Department of Chemistry and NIS Centre, University of Turin Via Giuria 7 Torino 10125 Italy
| | - Samuel A Stratford
- Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Dario Voinovich
- Department of Chemical and Pharmaceutical Sciences, University of Trieste Piazzale Europa 1 34127 Trieste Italy
| | - William Jones
- Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Dritan Hasa
- Department of Chemical and Pharmaceutical Sciences, University of Trieste Piazzale Europa 1 34127 Trieste Italy
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47
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Yuan J, Liu X, Wang S, Chang C, Zeng Q, Song Z, Jin Y, Zeng Q, Sun G, Ruan S, Greenwell C, Abramov YA. Virtual coformer screening by a combined machine learning and physics-based approach. CrystEngComm 2021. [DOI: 10.1039/d1ce00587a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Cocrystals as a solid form technology for improving physicochemical properties have gained increasing popularity in the pharmaceutical, nutraceutical, and agrochemical industries.
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Affiliation(s)
- Jiuchuang Yuan
- XtalPi Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 hongliu Road, Fubao Community, Fubao Street, Futian District, Shenzhen, 518100 China
| | - Xuetao Liu
- XtalPi Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 hongliu Road, Fubao Community, Fubao Street, Futian District, Shenzhen, 518100 China
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogeomics, Peking University Shenzhen Graduate School, Shenzhen, 518055 China
| | - Simin Wang
- XtalPi Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 hongliu Road, Fubao Community, Fubao Street, Futian District, Shenzhen, 518100 China
| | - Chao Chang
- XtalPi Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 hongliu Road, Fubao Community, Fubao Street, Futian District, Shenzhen, 518100 China
| | - Qiao Zeng
- XtalPi Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 hongliu Road, Fubao Community, Fubao Street, Futian District, Shenzhen, 518100 China
| | - Zhengtian Song
- XtalPi Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 hongliu Road, Fubao Community, Fubao Street, Futian District, Shenzhen, 518100 China
| | - Yingdi Jin
- XtalPi Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 hongliu Road, Fubao Community, Fubao Street, Futian District, Shenzhen, 518100 China
| | - Qun Zeng
- XtalPi Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 hongliu Road, Fubao Community, Fubao Street, Futian District, Shenzhen, 518100 China
| | - Guangxu Sun
- XtalPi Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 hongliu Road, Fubao Community, Fubao Street, Futian District, Shenzhen, 518100 China
| | - Shigang Ruan
- XtalPi Inc., Shenzhen Jingtai Technology Co., Ltd., Floor 3, Sf Industrial Plant, No. 2 hongliu Road, Fubao Community, Fubao Street, Futian District, Shenzhen, 518100 China
| | | | - Yuriy A. Abramov
- XtalPi Inc, Cambridge, Massachusetts 02142, USA
- Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
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48
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Vriza A, Canaj AB, Vismara R, Kershaw Cook LJ, Manning TD, Gaultois MW, Wood PA, Kurlin V, Berry N, Dyer MS, Rosseinsky MJ. One class classification as a practical approach for accelerating π-π co-crystal discovery. Chem Sci 2020; 12:1702-1719. [PMID: 34163930 PMCID: PMC8179233 DOI: 10.1039/d0sc04263c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The implementation of machine learning models has brought major changes in the decision-making process for materials design. One matter of concern for the data-driven approaches is the lack of negative data from unsuccessful synthetic attempts, which might generate inherently imbalanced datasets. We propose the application of the one-class classification methodology as an effective tool for tackling these limitations on the materials design problems. This is a concept of learning based only on a well-defined class without counter examples. An extensive study on the different one-class classification algorithms is performed until the most appropriate workflow is identified for guiding the discovery of emerging materials belonging to a relatively small class, that being the weakly bound polyaromatic hydrocarbon co-crystals. The two-step approach presented in this study first trains the model using all the known molecular combinations that form this class of co-crystals extracted from the Cambridge Structural Database (1722 molecular combinations), followed by scoring possible yet unknown pairs from the ZINC15 database (21 736 possible molecular combinations). Focusing on the highest-ranking pairs predicted to have higher probability of forming co-crystals, materials discovery can be accelerated by reducing the vast molecular space and directing the synthetic efforts of chemists. Further on, using interpretability techniques a more detailed understanding of the molecular properties causing co-crystallization is sought after. The applicability of the current methodology is demonstrated with the discovery of two novel co-crystals, namely pyrene-6H-benzo[c]chromen-6-one (1) and pyrene-9,10-dicyanoanthracene (2). Machine learning using one class classification on a database of existing co-crystals enables the identification of co-formers which are likely to form stable co-crystals, resulting in the synthesis of two co-crystals of polyaromatic hydrocarbons.![]()
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Affiliation(s)
- Aikaterini Vriza
- Department of Chemistry and Materials Innovation Factory, University of Liverpool 51 Oxford Street Liverpool L7 3NY UK .,Leverhulme Research Centre for Functional Materials Design, University of Liverpool Oxford Street Liverpool L7 3NY UK
| | - Angelos B Canaj
- Department of Chemistry and Materials Innovation Factory, University of Liverpool 51 Oxford Street Liverpool L7 3NY UK
| | - Rebecca Vismara
- Department of Chemistry and Materials Innovation Factory, University of Liverpool 51 Oxford Street Liverpool L7 3NY UK
| | - Laurence J Kershaw Cook
- Department of Chemistry and Materials Innovation Factory, University of Liverpool 51 Oxford Street Liverpool L7 3NY UK
| | - Troy D Manning
- Department of Chemistry and Materials Innovation Factory, University of Liverpool 51 Oxford Street Liverpool L7 3NY UK
| | - Michael W Gaultois
- Department of Chemistry and Materials Innovation Factory, University of Liverpool 51 Oxford Street Liverpool L7 3NY UK .,Leverhulme Research Centre for Functional Materials Design, University of Liverpool Oxford Street Liverpool L7 3NY UK
| | - Peter A Wood
- Cambridge Crystallographic Data Centre 12 Union Road Cambridge CB2 1EZ UK
| | - Vitaliy Kurlin
- Materials Innovation Factory, Computer Science Department, University of Liverpool Liverpool L69 3BX UK
| | - Neil Berry
- Department of Chemistry and Materials Innovation Factory, University of Liverpool 51 Oxford Street Liverpool L7 3NY UK
| | - Matthew S Dyer
- Department of Chemistry and Materials Innovation Factory, University of Liverpool 51 Oxford Street Liverpool L7 3NY UK .,Leverhulme Research Centre for Functional Materials Design, University of Liverpool Oxford Street Liverpool L7 3NY UK
| | - Matthew J Rosseinsky
- Department of Chemistry and Materials Innovation Factory, University of Liverpool 51 Oxford Street Liverpool L7 3NY UK .,Leverhulme Research Centre for Functional Materials Design, University of Liverpool Oxford Street Liverpool L7 3NY UK
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Holmes ST, Vojvodin CS, Schurko RW. Dispersion-Corrected DFT Methods for Applications in Nuclear Magnetic Resonance Crystallography. J Phys Chem A 2020; 124:10312-10323. [DOI: 10.1021/acs.jpca.0c06372] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sean T. Holmes
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
| | - Cameron S. Vojvodin
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
| | - Robert W. Schurko
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
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Devogelaer J, Meekes H, Tinnemans P, Vlieg E, Gelder R. Co‐crystal Prediction by Artificial Neural Networks**. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009467] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jan‐Joris Devogelaer
- Radboud University Institute for Molecules and Materials Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Hugo Meekes
- Radboud University Institute for Molecules and Materials Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Paul Tinnemans
- Radboud University Institute for Molecules and Materials Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Elias Vlieg
- Radboud University Institute for Molecules and Materials Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - René Gelder
- Radboud University Institute for Molecules and Materials Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
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