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Hashikawa Y, Murata Y. Direct Through-Space Substituent-π Interactions in Noncovalent Arene-Fullerene Assemblies. Chem Asian J 2024; 19:e202400075. [PMID: 38385611 DOI: 10.1002/asia.202400075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/19/2024] [Accepted: 02/21/2024] [Indexed: 02/23/2024]
Abstract
The arene-arene interactions between electron-rich and deficient aromatics have been less understood. Herein, we focus on a [60]fullerene π-surface as an electron-deficient aromatics. Using a 1H signal of H2O@C60 as a magnetic probe, the presence of benzene-fullerene interactions was confirmed. To investigate substituent effects on the noncovalent arene-fullerene interactions, NMR titration experiments were carried out using an open-[60]fullerene and a series of substituted benzenes, i. e., PhX (X=NO2, CN, Cl, OMe, H, CH3, and NH2), demonstrating a 1 : 2 stoichiometry with a positive correlation between stabilization energies upon the first association (ΔG1) and Hammet constants (σm). The destabilization of the self-assembled structure for X=OMe with a σ-withdrawing nature clearly showed direct through-space substituent-π interactions describable by the Wheeler-Houk model while the second association was suggested to be considerably perturbed by the secondary effects.
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Affiliation(s)
- Yoshifumi Hashikawa
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yasujiro Murata
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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2
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Liu X, Zhang H, Liu C, Wang Z, Zhang X, Yu H, Zhao Y, Li MJ, Li Y, He YL, He G. Commercializable Naphthalene Diimide Anolytes for Neutral Aqueous Organic Redox Flow Batteries. Angew Chem Int Ed Engl 2024:e202405427. [PMID: 38603586 DOI: 10.1002/anie.202405427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/10/2024] [Accepted: 04/11/2024] [Indexed: 04/13/2024]
Abstract
Neutral aqueous organic redox flow batteries (AORFBs) hold the potential to facilitate the transition of renewable energy sources from auxiliary to primary energy, the commercial production of anolyte materials still suffers from insufficient performance of high-concentration and the high cost of the preparation problem. To overcome these challenges, this study provides a hydrothermal synthesis methodology and introduces the charged functional groups into hydrophobic naphthalene diimide cores, and prepares a series of high-performance naphthalene diimide anolytes. Under the synergistic effect of π-π stacking and H-bonding networks, the naphthalene diimide exhibits excellent structural stability and the highest water solubility (1.85 M for dex-NDI) reported to date. By employing the hydrothermal method, low-cost naphthalene diimides are successfully synthesized on a hundred-gram scale of $0.16 g-1 ($2.43 Ah-1), which is also the lowest price reported to date. The constructed full battery achieves a high electron concentration of 2.4 M, a high capacity of 54.4 Ah L-1, and a power density of 318 mW cm-2 with no significant capacity decay observed during long-duration cycling. These findings provide crucial support for the commercialization of AORFBs and pave the way for revolutionary developments in neutral AORFBs.
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Affiliation(s)
- Xu Liu
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Heng Zhang
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Chenjing Liu
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Zengrong Wang
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Xuri Zhang
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Haiyan Yu
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Yujie Zhao
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Ming-Jia Li
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Yinshi Li
- National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710049, China
| | - Ya-Ling He
- National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710049, China
| | - Gang He
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
- National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710049, China
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Faubert L, Arman HD, Adrian RA. Aqua-bis-(2,2'-bi-pyridine-κ 2N, N')(isonicotinamide-κ N)ruthenium(II) bis-(trifluoromethanesulfonate). IUCrdata 2024; 9:x240114. [PMID: 38455113 PMCID: PMC10915547 DOI: 10.1107/s2414314624001147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 02/02/2024] [Indexed: 03/09/2024] Open
Abstract
In the title complex, [Ru(C10H8N2)2(C6H6N2O)(H2O)](CF3SO3)2, the central RuII atom is sixfold coordinated by two bidentate 2,2'-bi-pyridine, an isonic-otinamide ligand, and a water mol-ecule in a distorted octa-hedral environment with tri-fluoro-methane-sulfonate ions completing the outer coordination sphere of the complex. Hydrogen bonding involving the water mol-ecule and weak π-π stacking inter-actions between the pyridyl rings in adjacent mol-ecules contribute to the alignment of the complexes in columns parallel to the c axis.
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Affiliation(s)
- Liam Faubert
- Department of Chemistry and Biochemistry, University of the Incarnate Word, San Antonio, Texas 78209, USA
| | - Hadi D. Arman
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78249, USA
| | - Rafael A. Adrian
- Department of Chemistry and Biochemistry, University of the Incarnate Word, San Antonio, Texas 78209, USA
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Nogué-Guzmán VC, Burgos-Suazo A, Rivera-Reyes JO, Montes Quiñones VP, Ramis-Aybar PC, Burgos-Jiménez AC, González-Nieves K, Piñero-Cruz DM. New copper carboxyl-ate pyrene dimers: synthesis, crystal structure, Hirshfeld surface analysis and electrochemical characterization. Acta Crystallogr E Crystallogr Commun 2024; 80:1-9. [PMID: 38312155 PMCID: PMC10833376 DOI: 10.1107/s2056989023010277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 11/29/2023] [Indexed: 02/06/2024]
Abstract
Two new copper dimers, namely, bis-(dimethyl sulfoxide)-tetra-kis-(μ-pyrene-1-carboxyl-ato)dicopper(Cu-Cu), [Cu2(C17H9O2)4(C2H6OS)2] or [Cu2(pyr-COO-)4(DMSO)2] (1), and bis-(di-methyl-formamide)-tetra-kis-(μ-pyrene-1-carboxyl-ato)dicopper(Cu-Cu), [Cu2(C17H9O2)4(C3H7NO)2] or [Cu2(pyr-COO-)4(DMF)2] (2) (pyr = pyrene), were synthesized from the reaction of pyrene-1-carb-oxy-lic acid, copper(II) nitrate and tri-ethyl-amine from solvents DMSO and DMF, respectively. While 1 crystallized in the space group P , the crystal structure of 2 is in space group P21/n. The Cu atoms have octa-hedral geometries, with four oxygen atoms from carboxyl-ate pyrene ligands occupying the equatorial positions, a solvent mol-ecule coordinating at one of the axial positions, and a Cu⋯Cu contact in the opposite position. The packing in the crystal structures exhibits π-π stacking inter-actions and short contacts through the solvent mol-ecules. The Hirshfeld surfaces and two-dimensional fingerprint plots were generated for both compounds to better understand the inter-molecular inter-actions and the contribution of heteroatoms from the solvent ligands to the crystal packing. In addition, a Cu2+/Cu1+ quasi-reversible redox process was identified for compound 2 using cyclic voltammetry that accounts for a diffusion-controlled electron-donation process to the Cu dimer.
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Affiliation(s)
- Vianca C. Nogué-Guzmán
- Department of Natural Sciences, University of Puerto Rico, Carolina Campus, Carolina, 00984-4800, Puerto Rico
| | - Alejandro Burgos-Suazo
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, San Juan, 00927, Puerto Rico
| | - Javier O. Rivera-Reyes
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, San Juan, 00927, Puerto Rico
| | - Vasti P. Montes Quiñones
- Department of Natural Sciences, University of Puerto Rico, Carolina Campus, Carolina, 00984-4800, Puerto Rico
| | - Paola C. Ramis-Aybar
- Department of Natural Sciences, University of Puerto Rico, Carolina Campus, Carolina, 00984-4800, Puerto Rico
| | - Adriana C. Burgos-Jiménez
- Department of Natural Sciences, University of Puerto Rico, Carolina Campus, Carolina, 00984-4800, Puerto Rico
| | - Karilys González-Nieves
- Department of Natural Sciences, University of Puerto Rico, Carolina Campus, Carolina, 00984-4800, Puerto Rico
| | - Dalice M. Piñero-Cruz
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, San Juan, 00927, Puerto Rico
- University of Puerto Rico’s Molecular Sciences Research Center, San Juan, 00926, Puerto Rico
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5
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Bakheit AH, Alkahtani HM. Integrated Structural, Functional, and ADMET Analysis of 2-Methoxy-4,6-diphenylnicotinonitrile: The Convergence of X-ray Diffraction, Molecular Docking, Dynamic Simulations, and Advanced Computational Insights. Molecules 2023; 28:6859. [PMID: 37836701 PMCID: PMC10574294 DOI: 10.3390/molecules28196859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/15/2023] Open
Abstract
This study systematically investigates the molecular structure and electronic properties of 2-methoxy-4,6-diphenylnicotinonitrile, employing X-ray diffraction (XRD) and sophisticated computational methodologies. XRD findings validate the compound's orthorhombic crystallization in the P21212 space group, composed of a pyridine core flanked by two phenyl rings. Utilizing the three-dimensional Hirshfeld surface, the research decodes the molecule's spatial attributes, further supported by exhaustive statistical assessments. Key interactions, such as π-π stacking and H⋯X contacts, are spotlighted, underscoring their role in the crystal's inherent stability and characteristics. Energy framework computations and density functional theory (DFT) analyses elucidate the prevailing forces in the crystal and reveal geometric optimization facets and molecular reactivity descriptors. Emphasis is given to the exploration of frontier molecular orbitals (FMOs), aromaticity, and π-π stacking capacities. The research culminates in distinguishing electron density distributions, aromatic nuances, and potential reactivity hotspots, providing a holistic view of the compound's structural and electronic landscape. Concurrently, molecular docking investigates its interaction with the lipoprotein-associated phospholipase A2 protein. Notably, the compound showcases significant interactions with the protein's active site. Molecular dynamics simulations reveal the compound's influence on protein stability and flexibility. Although the molecule exhibits strong inhibitory potential against Lp-PLA2, its drug development prospects face challenges related to solubility and interactions with drug transport proteins.
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Affiliation(s)
- Ahmed H. Bakheit
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia;
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6
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Umirova GA, Turaev KK, Alimnazarov BK, Kasimov SA, Djalilov AT, Ibragimov BT, Ashurov JM. Crystal structure and Hirshfeld surface analysis of 8-aza-niumylquinolinium tetra-chlorido-zincate(II). Acta Crystallogr E Crystallogr Commun 2023; 79:856-861. [PMID: 37693678 PMCID: PMC10483548 DOI: 10.1107/s2056989023007466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 08/25/2023] [Indexed: 09/12/2023]
Abstract
The reaction of 8-amino-quinoline, zinc chloride and hydro-chloric acid in ethanol yielded the title salt, (C9H10N2)[ZnCl4], which consists of a planar 8-aza-n-ium-yl-quinolinium dication and a tetra-hedral tetra-chloro-zincate dianion. The 8-amino-quinoline moiety is protonated at both the amino and the ring N atoms. In the crystal, the cations and anions are connected by inter-molecular N-H⋯Cl and C-H⋯Cl hydrogen bonds, forming sheets parallel to (001). Adjacent sheets are linked through π-π inter-actions involving the pyridine and arene rings of the 8-aza-niumylquinolinium dication. Hirshfeld surface analysis indicates that the most important contributions to the crystal packing are from H⋯Cl (48.1%), H⋯H (19.9%), H⋯C/C⋯H (14.3%) (involving the cations) and H⋯Cl (82.6%) (involving the anions) interactions.
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Affiliation(s)
- Gulnora A. Umirova
- Termez State University, Barkamol avlod street 43, Termez city, Uzbekistan
| | - Khayit Kh. Turaev
- Termez State University, Barkamol avlod street 43, Termez city, Uzbekistan
| | | | - Sherzod A. Kasimov
- Termez State University, Barkamol avlod street 43, Termez city, Uzbekistan
| | - Abdulakhat T. Djalilov
- Tashkent Scientific Research Institute of Chemical Technology, Township Shura-bazar, District of Zangiata, Tashkent 111116, Uzbekistan
| | - Bakhtiyar T. Ibragimov
- Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, M. Ulugbek Str. 83, Tashkent 700125, Uzbekistan
| | - Jamshid M. Ashurov
- Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, M. Ulugbek Str. 83, Tashkent 700125, Uzbekistan
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7
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Manankandayalage CP, Unruh DK, Perry R, Krempner C. 1,8-Dihydroxy Naphthalene-A New Building Block for the Self-Assembly with Boronic Acids and 4,4'-Bipyridine to Stable Host-Guest Complexes with Aromatic Hydrocarbons. Molecules 2023; 28:5394. [PMID: 37513266 PMCID: PMC10385103 DOI: 10.3390/molecules28145394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/22/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
The new Lewis acid-base adducts of general formula X(nad)B←NC5H4-C5H4N→B(nad)X [nad = 1,8-O2C10H6, X = C6H5 (2c), 3,4,5-F3-C6H2 (2d)] were synthesized in high yields via reactions of 1,8-dihydroxy naphthalene [nadH2] and 4,4'-bipyridine with the aryl boronic acids C6H5B(OH)2 and 3,4,5-F3-C6H2B(OH)2, respectively, and structurally characterized by multi-nuclear NMR spectroscopy and SCXRD. Self-assembled H-shaped Lewis acid-base adduct 2d proved to be effective in forming thermally stable host-guest complexes, 2d × solvent, with aromatic hydrocarbon solvents such as benzene, toluene, mesitylene, aniline, and m-, p-, and o-xylene. Crystallographic analysis of these solvent adducts revealed host-guest interactions to primarily occur via π···π contacts between the 4,4'-bipyridyl linker and the aromatic solvents, resulting in the formation of 1:1 and 1:2 host-guest complexes. Thermogravimetric analysis of the isolated complexes 2d × solvent revealed their high thermal stability with peak temperatures associated with the loss of solvent ranging from 122 to 147 °C. 2d, when self-assembled in an equimolar mixture of m-, p-, and o-xylene (1:1:1), preferentially binds to o-xylene. Collectively, these results demonstrate the ability of 1,8-dihydroxy naphthalene to serve as an effective building block in the selective self-assembly to supramolecular aggregates through dative covalent N→B bonds.
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Affiliation(s)
- Chamila P Manankandayalage
- Department of Chemistry & Biochemistry, Texas Tech University, P.O. Box 41061, Lubbock, TX 79409-1061, USA
| | - Daniel K Unruh
- Department of Chemistry & Biochemistry, Texas Tech University, P.O. Box 41061, Lubbock, TX 79409-1061, USA
| | - Ryan Perry
- Department of Chemistry & Biochemistry, Texas Tech University, P.O. Box 41061, Lubbock, TX 79409-1061, USA
| | - Clemens Krempner
- Department of Chemistry & Biochemistry, Texas Tech University, P.O. Box 41061, Lubbock, TX 79409-1061, USA
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Liu S, Xu Y, Wang J, Wang X, Guan S, Zhang T. Long-circulating gambogic acid-loaded nanodiamond composite nanosystem with inhibition of cell migration for tumor therapy. J Colloid Interface Sci 2023; 646:732-744. [PMID: 37229991 DOI: 10.1016/j.jcis.2023.05.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 05/11/2023] [Accepted: 05/16/2023] [Indexed: 05/27/2023]
Abstract
Herein, ultra dispersed and stably suspended nanodiamonds (NDs) were demonstrated to have a high load capacity, sustained release, and ability to serve as a biocompatible vehicle for delivery anticancer drugs. NDs with size of 50-100 nm exhibited good biocompatibility in normal human liver (L-02) cells. In particular, 50 nm ND not only promoted the noticeable proliferation of the L-02 cells but also can effectively inhibited the migration of human liver carcinoma (HepG2) cells. The gambogic acid-loaded nanodiamond (ND/GA) complex assembled by π-π stacking exhibits ultrasensitive and apparent suppression efficiency on the proliferation of HepG2 cells through high internalization and less efflux compared to free GA. More importantly, the ND/GA system can significantly increase the intracellular reactive oxygen species (ROS) levels in HepG2 cells and thus induce the cell apoptosis. The increase in intracellular ROS levels causes damage to the mitochondrial membrane potential (MMP) and activates cysteinyl aspartate specific proteinase 3 (Caspase-3) and cysteinyl aspartate specific proteinase 9 (Caspase-9), which leads to the occurrence of apoptosis. In vivo experiments also confirmed that the ND/GA complex has a much higher anti-tumor capability than free GA. Thus, the current ND/GA system is promising for cancer therapy.
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Affiliation(s)
- Shanshan Liu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; Center of Advanced Analysis and Gene Sequencing, Zhengzhou University, Zhengzhou 450001, China
| | - Yujia Xu
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Jianfeng Wang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.
| | - Xuemin Wang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Shaokang Guan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Tao Zhang
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China.
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Mohana M, Thomas Muthiah P, McMillen CD, Butcher RJ. Supramolecular interactions in salts/cocrystals involving pyrimidine derivatives of sulfonate/carboxylic acid. Acta Crystallogr C Struct Chem 2023; 79:61-67. [PMID: 36739611 DOI: 10.1107/s2053229623000177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/06/2023] [Indexed: 01/24/2023] Open
Abstract
The crystal structures of three compounds involving aminopyrimidine derivatives are reported, namely, 5-fluorocytosinium sulfanilate-5-fluorocytosine-4-azaniumylbenzene-1-sulfonate (1/1/1), C4H5FN3O+·C6H6NO3S-·C4H4FN3O·C6H7NO3S, I, 5-fluorocytosine-indole-3-propionic acid (1/1), C4H4FN3O·C11H11NO2, II, and 2,4,6-triaminopyrimidinium 3-nitrobenzoate, C4H8N5+·C7H4NO4-, III, which have been synthesized and characterized by single-crystal X-ray diffraction. In I, there are two 5-fluorocytosine (5FC) molecules (5FC-A and 5FC-B) in the asymmetric unit, with one of the protons disordered between them. 5FC-A and 5FC-B are linked by triple hydrogen bonds, generating two fused rings [two R22(8) ring motifs]. The 5FC-A molecules form a self-complementary base pair [R22(8) ring motif] via a pair of N-H...O hydrogen bonds and the 5FC-B molecules form a similar complementary base pair [R22(8) ring motif]. The combination of these two types of pairing generates a supramolecular ribbon. The 5FC molecules are further hydrogen bonded to the sulfanilate anions and sulfanilic acid molecules via N-H...O hydrogen bonds, generating R44(22) and R66(36) ring motifs. In cocrystal II, two types of base pairs (homosynthons) are observed via a pair of N-H...O/N-H...N hydrogen bonds, generating R22(8) ring motifs. The first type of base pair is formed by the interaction of an N-H group and the carbonyl O atom of 5FC molecules through a couple of N-H...O hydrogen bonds. Another type of base pair is formed via the amino group and a pyrimidine ring N atom of the 5FC molecules through a pair of N-H...N hydrogen bonds. The base pairs (via N-H...N hydrogen bonds) are further bridged by the carboxyl OH group of indole-3-propionic acid and the O atom of 5FC through O-H...O hydrogen bonds on either side of the R22(8) motif. This leads to a DDAA array. In salt III, one of the N atoms of the pyrimidine ring is protonated and interacts with the carboxylate group of the anion through N-H...O hydrogen bonds, leading to the primary ring motif R22(8). Furthermore, the 2,4,6-triaminopyrimidinium (TAP) cations form base pairs [R22(8) homosynthon] via N-H...N hydrogen bonds. A carboxylate O atom of the 3-nitrobenzoate anion bridges two of the amino groups on either side of the paired TAP cations to form another ring [R32(8)]. This leads to the generation of a quadruple DADA array. The crystal structures are further stabilized by π-π stacking (I and III), C-H...π (I and II), C-F...π (I) and C-O...π (II) interactions.
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Affiliation(s)
- Marimuthu Mohana
- School of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, Tamilnadu, India
| | | | - Colin D McMillen
- Department of Chemistry, Clemson University, H.L. Hunter Laboratories, Clemson, SC 29634, USA
| | - Ray J Butcher
- Department of Chemistry, Howard University, Washington, DC 20059, USA
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Temesgen AW, Novikov AP, Tskhovrebov AG, Kultyshkina EK, Le TA. Synthesis, crystal structure and Hirshfeld surface analysis of di-μ 2-iodido-bis-[(2,2'-bi-quinoline-κ 2 N, N')copper(I)]. Acta Crystallogr E Crystallogr Commun 2023; 79:132-135. [PMID: 36910000 PMCID: PMC9993906 DOI: 10.1107/s2056989023000634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 01/24/2023] [Indexed: 02/09/2023]
Abstract
The mol-ecular and crystal structures of the title compound, [Cu2I2(C18H12N2)2], were examined by single-crystal X-ray diffraction and Hirshfeld surface analysis. The Cu atom is coordinated in a distorted tetra-hedral geometry by two N atoms from the 2,2'-bi-quinoline ligands and the two μ2-bridging iodide ligands. The mol-ecules are in contact via π-π-stacking inter-actions. Hirshfeld surface analysis showed that the most important contributions to the inter-molecular inter-actions are H⋯H (39.7%), H⋯I/I⋯H (17.8%), C⋯H/H⋯C (17.5%), C⋯C (16.5%), N⋯C/C⋯N (3.9%) and N⋯H/H⋯N (3.5%).
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Affiliation(s)
- Ayalew W Temesgen
- Department of Chemistry, College of Natural and Computational Science, University of Gondar, Gondar 196, Ethiopia
| | - Anton P Novikov
- Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya, St, 117198, Moscow, Russian Federation.,Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31 Leninsky Prospekt bldg 4, 119071 Moscow, Russian Federation
| | - Alexander G Tskhovrebov
- Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya, St, 117198, Moscow, Russian Federation
| | - Ekaterina K Kultyshkina
- Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya, St, 117198, Moscow, Russian Federation
| | - Tuan Anh Le
- University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Thanh Xuan, 100000, Hanoi, Vietnam
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Acharige UAI, Saunders GC. The Influence of the Halide in the Crystal Structures of 1-(2,3,5,6-Tetrafluoro-4-pyridyl)-3-benzylimidazolium Halides. Molecules 2022; 27:molecules27217634. [PMID: 36364461 PMCID: PMC9656857 DOI: 10.3390/molecules27217634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/21/2022] [Accepted: 10/28/2022] [Indexed: 11/09/2022] Open
Abstract
The crystal structures of 1-(2,3,5,6-tetrafluoro-4-pyridyl)-3-benzylimidazolium chloride (1) and iodide (3) have been determined by single crystal X-ray diffraction. The crystal structure of 1 is similar to that of the bromide salt (2), possessing anion···C5F5N···C6H5 motifs, whilst that of 3 contains columns of alternating iodide anions and parallel tetrafluoropyridyl rings. All three crystal structures possess C(1)−H∙∙∙X− and C(2)−H∙∙∙X− hydrogen bonding. DFT calculations reveal that the strengths of the hydrogen bonding interactions lie in the order C(1)−H···X− > C(3)−H···X− > C(2)−H···X− for the same halide (X−) and Cl− > Br− > I− for each position. It is suggested that salt 3 adopts a different structure to salts 1 and 2 because of the larger size of iodide.
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Qi R, Qi W, Zhang Y, Liu B, Wang J, Li H, Yuan H, Xie S. Fabrication of Multilayered Two-Dimensional Micelles and Fibers by Controlled Self-Assembly of Rod-Coil Block Copolymers. Polymers (Basel) 2022; 14:4125. [PMID: 36236073 DOI: 10.3390/polym14194125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/14/2022] [Accepted: 09/18/2022] [Indexed: 11/09/2022] Open
Abstract
Fabricating hierarchical nanomaterials by self-assembly of rod-coil block copolymers attracts great interest. However, the key factors that affect the formation of the hierarchical nanomaterials have not been thoroughly researched. Herein, we have synthesized two diblock copolymers composed of poly(3-hexylthiophene) (P3HT) and polyethylene glycol (PEG). Through a heating, cooling, and aging process, a series of multilayered hierarchical micelles and fibers were prepared in alcoholic solutions. The transition from fibers to hierarchical micelles are strictly influenced by the strength of the π-π stacking interaction, the PEG chain length, and solvent. In isopropanol, the P3HT22-b-PEG43 could self-assemble into hierarchical micelles composed of several two-dimensional (2D) laminar layers, driven by the π-π stacking interaction and van der Waals force. The P3HT22-b-PEG43 could not self-assemble into well-defined nanostructures in methanol and ethanol, but could self-assemble into fibers in isobutanol. However, the P3HT22-b-PEG113 with a longer corona block only self-assembled into fibers in four alcoholic solutions, due to the increase in dissolving capacity and steric hindrance. The sizes and the size distributions of the nanostructures both increased with the increase in polymer concentration and the decrease in solvent polarity. This study shows a method to fabricate the hierarchical micelles.
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Marforio TD, Calza A, Mattioli EJ, Zerbetto F, Calvaresi M. Dissecting the Supramolecular Dispersion of Fullerenes by Proteins/Peptides: Amino Acid Ranking and Driving Forces for Binding to C 60. Int J Mol Sci 2021; 22:ijms222111567. [PMID: 34768997 PMCID: PMC8583719 DOI: 10.3390/ijms222111567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 01/05/2023] Open
Abstract
Molecular dynamics simulations were used to quantitatively investigate the interactions between the twenty proteinogenic amino acids and C60. The conserved amino acid backbone gave a constant energetic interaction ~5.4 kcal mol−1, while the contribution to the binding due to the amino acid side chains was found to be up to ~5 kcal mol−1 for tryptophan but lower, to a point where it was slightly destabilizing, for glutamic acid. The effects of the interplay between van der Waals, hydrophobic, and polar solvation interactions on the various aspects of the binding of the amino acids, which were grouped as aromatic, charged, polar and hydrophobic, are discussed. Although π–π interactions were dominant, surfactant-like and hydrophobic effects were also observed. In the molecular dynamics simulations, the interacting residues displayed a tendency to visit configurations (i.e., regions of the Ramachandran plot) that were absent when C60 was not present. The amino acid backbone assumed a “tepee-like” geometrical structure to maximize interactions with the fullerene cage. Well-defined conformations of the most interactive amino acids (Trp, Arg, Met) side chains were identified upon C60 binding.
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Qi L, Liu C, Zhang Y, Zhang Z, Duan H, Zhao H, Xin X, Chen L, Jin M, Guan Y, Gao Z, Huang W. Development of Mitomycin C-Loaded Nanoparticles Prepared Using the Micellar Assembly Driven by the Combined Effect of Hydrogen Bonding and π-π Stacking and Its Therapeutic Application in Bladder Cancer. Pharmaceutics 2021; 13:1776. [PMID: 34834192 PMCID: PMC8624376 DOI: 10.3390/pharmaceutics13111776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 09/16/2021] [Accepted: 10/12/2021] [Indexed: 11/16/2022] Open
Abstract
Micelle is mainly used for drug delivery and is prepared from amphiphilic block copolymers. It can be formed into an obvious core-shell structure that can incorporate liposoluble drugs. However, micelles are not suitable for the encapsulation of water-soluble drugs, and it is also difficult to maintain stability in the systemic circulation. To solve these problems, a type of polymer material, Fmoc-Lys-PEG and Fmoc-Lys-PEG-RGD, was designed and synthesized. These copolymers could self-assemble into micelles driven by π-π stacking and the hydrophobic interaction of 9-fluorenylmethoxycarbony (Fmoc) and, at the same time, form a framework for a hydrogen-bonding environment in the core. Mitomycin C (MMC), as a water-soluble drug, can be encapsulated into micelles by hydrogen-bonding interactions. The interaction force between MMC and the polymers was analyzed by molecular docking simulation and Fourier transform infrared (FTIR). It was concluded that the optimal binding conformation can be obtained, and that the main force between the MMC and polymers is hydrogen bonding. Different types of MMC nanoparticles (NPs) were prepared and the physicochemical properties of them were systematically evaluated. The pharmacodynamics of the MMC NPs in vitro and in vivo were also studied. The results show that MMC NPs had a high uptake efficiency, could promote cell apoptosis, and had a strong inhibitory effect on cell proliferation. More importantly, the as-prepared NPs could effectively induce tumor cell apoptosis and inhibit tumor growth and metastasis in vivo.
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Affiliation(s)
- Lingling Qi
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (C.L.); (Y.Z.); (Z.Z.); (H.D.); (H.Z.); (X.X.); (L.C.); (M.J.)
| | - Chao Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (C.L.); (Y.Z.); (Z.Z.); (H.D.); (H.Z.); (X.X.); (L.C.); (M.J.)
| | - Yingying Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (C.L.); (Y.Z.); (Z.Z.); (H.D.); (H.Z.); (X.X.); (L.C.); (M.J.)
| | - Zheao Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (C.L.); (Y.Z.); (Z.Z.); (H.D.); (H.Z.); (X.X.); (L.C.); (M.J.)
| | - Hongxia Duan
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (C.L.); (Y.Z.); (Z.Z.); (H.D.); (H.Z.); (X.X.); (L.C.); (M.J.)
| | - Heming Zhao
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (C.L.); (Y.Z.); (Z.Z.); (H.D.); (H.Z.); (X.X.); (L.C.); (M.J.)
| | - Xin Xin
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (C.L.); (Y.Z.); (Z.Z.); (H.D.); (H.Z.); (X.X.); (L.C.); (M.J.)
| | - Liqing Chen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (C.L.); (Y.Z.); (Z.Z.); (H.D.); (H.Z.); (X.X.); (L.C.); (M.J.)
| | - Mingji Jin
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (C.L.); (Y.Z.); (Z.Z.); (H.D.); (H.Z.); (X.X.); (L.C.); (M.J.)
| | - Youyan Guan
- Department of Urology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Zhonggao Gao
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (C.L.); (Y.Z.); (Z.Z.); (H.D.); (H.Z.); (X.X.); (L.C.); (M.J.)
| | - Wei Huang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (C.L.); (Y.Z.); (Z.Z.); (H.D.); (H.Z.); (X.X.); (L.C.); (M.J.)
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Pashanova KI, Bitkina VO, Yakushev IA, Arsenyev MV, Piskunov AV. Square-Planar Heteroleptic Complexes of α-Diimine-Ni II-Catecholate Type: Intramolecular Ligand-to-Ligand Charge Transfer. Molecules 2021; 26:4622. [PMID: 34361775 PMCID: PMC8347615 DOI: 10.3390/molecules26154622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 12/05/2022] Open
Abstract
Two heteroleptic NiII complexes combined the redox-active catecholate and 2,2'- bipyridine ligand platforms were synthesized to observe a photoinduced intramolecular ligand-to-ligand charge transfer (LL'CT, HOMOcatecholate → LUMOα-diimine). A molecular design of compound [NiII(3,6-Cat)(bipy)]∙CH3CN (1) on the base of bulky 3,6-di-tert-butyl-o-benzoquinone (3,6-DTBQ) was an annelation of the ligand with an electron donor glycol fragment, producing derivative [NiII(3,6-Catgly)(bipy)]∙CH2Cl2 (2), in order to influence the energy of LL'CT transition. A substantial longwave shift of the absorption peak was observed in the UV-Vis-NIR spectra of 2 compared with those in 1. In addition, the studied NiII derivatives demonstrated a pronounced negative solvatochromism, which was established using a broad set of solvents. The molecular geometry of both compounds can be ascribed as an insignificantly distorted square-planar type, and the π-π intermolecular stacking of the neighboring α-diimines is realized in a crystal packing. There is a lamellar crystal structure for complex 1, whereas the perpendicular T-motifs with the inter-stacks attractive π-π interactions form the packing of complex 2. The redox-active nature of ligand systems was clearly shown through the electrochemical study: a quasi-reversible one-electron reduction of 2,2'-bipyridine and two reversible successive one-electron oxidative conversations ("catecholate dianion-o-benzosemiquinonato radical anion-neutral o-benzoquinone") were detected.
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Affiliation(s)
- Kira I. Pashanova
- Laboratory of Metal Complexes with Redox-Active Ligands, G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinina Street, 603137 Nizhny Novgorod, Russia; (K.I.P.); (V.O.B.); (M.V.A.)
| | - Vladlena O. Bitkina
- Laboratory of Metal Complexes with Redox-Active Ligands, G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinina Street, 603137 Nizhny Novgorod, Russia; (K.I.P.); (V.O.B.); (M.V.A.)
| | - Ilya A. Yakushev
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninski Prospect, 119991 Moscow, Russia;
| | - Maxim V. Arsenyev
- Laboratory of Metal Complexes with Redox-Active Ligands, G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinina Street, 603137 Nizhny Novgorod, Russia; (K.I.P.); (V.O.B.); (M.V.A.)
| | - Alexandr V. Piskunov
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninski Prospect, 119991 Moscow, Russia;
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Benouatas A, Laroum R, Hamdouni N, Zemamouche W, Debache A, Boudjada A. Structural study and Hirshfeld surface analysis of ( Z)-4-(2-meth-oxy-benzyl-idene)-3-phenyl-isoxazol-5(4 H)-one. Acta Crystallogr E Crystallogr Commun 2021; 77:564-568. [PMID: 34026266 PMCID: PMC8100271 DOI: 10.1107/s2056989021004308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 04/21/2021] [Indexed: 11/10/2022]
Abstract
The title compound, C17H13NO3, adopts a Z configuration about the C=C bond. The isoxazole and meth-oxy-benzyl-idene rings are almost coplanar with a dihedral angle of 9.63 (7)° between them. In contrast, the phenyl substituent is twisted significantly out of the plane of the oxazole ring, with the two rings inclined to each other by 46.22 (4)°. The crystal structure features C-H⋯O, C-H⋯N and C-H⋯π hydrogen bonds and π-π contacts. An analysis of the Hirshfeld surfaces points to the importance of H⋯H, H⋯C/C⋯H and H⋯O/O⋯H contacts. The included surface areas of the title compound were compared to those of the isomeric structure (Z)-4-(4-meth-oxy-benzyl-idene)-3-phenyl-isoxazol-5(4H)-one [Zhang et al. (2015 ▸). CrystEngComm, 17, 7316-7322].
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Affiliation(s)
- Assia Benouatas
- Laboratoire de Cristallographie, Département de Physique, Université Mentouri-Constantine, 25000 Constantine, Algeria
| | - Rima Laroum
- Laboratoire de Synthèse de Molécules, d’Intérêts Biologiques, Département de Chimie, Université Mentouri-Constantine, 25000 Constantine, Algeria
| | - Noudjoud Hamdouni
- Laboratoire de Cristallographie, Département de Physique, Université Mentouri-Constantine, 25000 Constantine, Algeria
| | - Wissame Zemamouche
- Laboratoire de Cristallographie, Département de Physique, Université Mentouri-Constantine, 25000 Constantine, Algeria
| | - Abdelmadjid Debache
- Laboratoire de Synthèse de Molécules, d’Intérêts Biologiques, Département de Chimie, Université Mentouri-Constantine, 25000 Constantine, Algeria
| | - Ali Boudjada
- Laboratoire de Cristallographie, Département de Physique, Université Mentouri-Constantine, 25000 Constantine, Algeria
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17
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Kalle P, Tatarin SV, Zakharov AY, Kiseleva MA, Bezzubov SI. Synthesis and comparative structural study of 2-(pyridin-2-yl)-1 H-perimidine and its mono- and di- N-methyl-ated analogues. Acta Crystallogr E Crystallogr Commun 2021; 77:96-100. [PMID: 33614133 PMCID: PMC7869552 DOI: 10.1107/s205698902100013x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 01/05/2021] [Indexed: 11/11/2022]
Abstract
The title compounds, 2-(pyridin-2-yl)-1H-perimidine (C16H11N3; 1), 1-methyl-2-(pyridin-2-yl)-1H-perimidine (C17H13N3; 2), and 1,3-dimethyl-2-(pyridin-2-yl)-1H-perimidinium iodide (C18H16N3 +·I-; 3) were synthesized under mild conditions and their structures were determined by 1H NMR spectroscopy and single-crystal X-ray analysis. The N-methyl-ation of the nitro-gen atom(s) at the perimidine moiety results in a significant increase of the inter-plane angle between the pyridin-2-yl ring and the perimidine system. The unsubstituted perimidine (1) forms a weak intra-molecular N-H⋯N bond that consolidates the mol-ecular conformation. In the crystal structures of 1-3, the mol-ecular entities all are assembled through π-π and C-H⋯π inter-actions.
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Affiliation(s)
- Paulina Kalle
- Department of Chemistry, Lomonosov Moscow State University, Lenin’s Hills, 1-3, Moscow, 119991, Russian Federation
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russian Federation
| | - Sergei V. Tatarin
- Department of Chemistry, Lomonosov Moscow State University, Lenin’s Hills, 1-3, Moscow, 119991, Russian Federation
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russian Federation
| | - Alexander Yu. Zakharov
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russian Federation
| | - Marina A. Kiseleva
- Department of Chemistry, Lomonosov Moscow State University, Lenin’s Hills, 1-3, Moscow, 119991, Russian Federation
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russian Federation
| | - Stanislav I. Bezzubov
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russian Federation
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Abstract
Non-covalent interactions lie at the bases of the molecular recognition process. In medicinal chemistry, understanding how bioactive molecules interact with their target can help to explain structure-activity relationships (SAR) and improve potency of lead compounds. In particular, computational analysis of protein-ligand complexes can help to unravel key interactions and guide structure-based drug design.The literature describing protein-ligand complexes is typically focused on few types of non-covalent interactions (e.g., hydrophobic contacts, hydrogen bonds, and salt bridges). Stacking interactions involving aromatic rings are also relatively well known to medicinal chemistry practitioners. Potency optimization efforts are often focused on targeting these interactions. However, a variety of underappreciated interactions were shown to have a relevant effect on the stabilization of protein-ligand complexes. This chapter aims at listing selected non-covalent interactions and discuss some examples on how they can impact drug design.
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Ma Y, Cai D, Wan S, Yin P, Wang P, Lin W, Zheng Q. Control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells. Natl Sci Rev 2020; 7:1886-1895. [PMID: 34691530 PMCID: PMC8288506 DOI: 10.1093/nsr/nwaa189] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 07/25/2020] [Accepted: 07/27/2020] [Indexed: 01/02/2023] Open
Abstract
Nonfullerene acceptors are being investigated for use in polymer solar cells (PSCs), with their advantages of extending the absorption range, reducing the energy loss and therefore enhancing the power conversion efficiency (PCE). However, to further boost the PCE, mobilities of these nonfullerene acceptors should be improved. For nonfullerene acceptors, the π-π stacking distance between cofacially stacked molecules significantly affects their mobility. Here, we demonstrate a strategy to increase the mobility of heteroheptacene-based nonfullerene acceptors by reducing their π-π stacking distances via control over the bulkiness of lateral side chains. Incorporation of 2-butyloctyl substituents into the nonfullerene acceptor (M36) leads to an increased mobility with a reduced π-π stacking distance of 3.45 Å. Consequently, M36 affords an enhanced PCE of 16%, which is the highest among all acceptor-donor-acceptor-type nonfullerene acceptors to date. This strategy of control over the bulkiness of side chains on nonfullerene acceptors should aid the development of more efficient PSCs.
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Affiliation(s)
- Yunlong Ma
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Dongdong Cai
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Shuo Wan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pan Yin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pengsong Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenyuan Lin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Qingdong Zheng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
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20
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Jiang Q, Zhang Q, Wu X, Wu L, Lin JH. Exploring the Interfacial Phase and π-π Stacking in Aligned Carbon Nanotube/Polyimide Nanocomposites. Nanomaterials (Basel) 2020; 10:E1158. [PMID: 32545565 DOI: 10.3390/nano10061158] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 05/22/2020] [Accepted: 06/01/2020] [Indexed: 11/16/2022]
Abstract
To characterize the interfacial microstructure and interaction at a nanoscale has a significant meaning for the interface improvement of the nanocomposites. In this study, the interfacial microstructure and features of aligned multiwalled carbon nanotube (MWNT) and conjugated polymer polyimide (PI) with three molecular structures were investigated using small-angle X-ray scattering (SAXS), wide-angle x-ray diffraction (WAXD), and fluorescence emission spectroscopy. It was found that aligned MWNT/PI nanocomposites had a nonideal two-phase system with the interfaces belonging to long period stacking ordered structure. Attributed to the π-π stacking effect, MWNT/BTDA-MPD presented the most regular arrangement verified by fractal dimension. By adopting a one-dimension correlation function, each phase dimension in aligned MWNT/PI nanocomposites was calculated and verified by high resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). The π-π stacking was demonstrated to be an important interaction between MWNT and PI via WAXD and fluorescence emission spectroscopy, and it was influenced by the linkage bond between benzene rings in PIs. This work is of significance to reveal the interfacial features between conjugated polymer and carbon nanotubes (CNTs), which is favorable for the interface design of CNT-based high performance nanocomposites.
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21
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Velásquez JD, Tomczykowa M, Plonska-Brzezinska ME, Chaur MN. Evaluation of the Covalent Functionalization of Carbon Nano-Onions with Pyrene Moieties for Supercapacitor Applications. Materials (Basel) 2020; 13:E1141. [PMID: 32143430 DOI: 10.3390/ma13051141] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 02/26/2020] [Accepted: 02/28/2020] [Indexed: 02/03/2023]
Abstract
Herein, we report the surface functionalization of carbon nano-onions (CNOs) through an amidation reaction that occurs between the oxidized CNOs and 4-(pyren-4-yl)butanehydrazide. Raman and Fourier transform infrared spectroscopy methods were used to confirm the covalent functionalization. The percentage or number of groups in the outer shell was estimated with thermal gravimetric analysis. Finally, the potential applications of the functionalized CNOs as electrode materials in supercapacitors were evaluated by cyclic voltammetry and electrochemical impedance spectroscopy. Functionalization increased the specific capacitance by approximately 138% in comparison to that of the pristine CNOs, while acid-mediated oxidation reduced the specific capacitance of the nanomaterial by 24%.
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Vassilyeva OY, Buvaylo EA, Kokozay VN, Petrusenko SR, Melnyk AK, Skelton BW. Crystal structure of imidazo[1,5- a]pyridinium-based hybrid salt (C 13H 12N 3) 2[MnCl 4]. Acta Crystallogr E Crystallogr Commun 2020; 76:309-313. [PMID: 32148866 PMCID: PMC7057380 DOI: 10.1107/s2056989020001425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 01/31/2020] [Indexed: 11/22/2022]
Abstract
A new organic-inorganic hybrid salt [L]2[MnCl4] (I) where L + is the 2-methyl-3-(pyridin-2-yl)imidazo[1,5-a]pyridinium cation, is built of discrete organic cations and tetra-chlorido-manganate(II) anions. The L + cation was formed in situ in the oxidative cyclo-condensation of 2-pyridine-carbaldehyde and CH3NH2·HCl in methanol. The structure was refined as a two-component twin using PLATON (Spek, 2020 ▸) to de-twin the data. The twin law (-1 0 0 0 - 1 0 0.5 0 1) was applied in the refinement where the twin component fraction refined to 0.155 (1). The compound crystallizes in the space group P21/c with two crystallographically non-equivalent cations in the asymmetric unit, which possess similar structural conformations. The fused pyridinium and imidazolium rings of the cations are virtually coplanar [dihedral angles are 0.89 (18) and 0.78 (17)°]; the pendant pyridyl rings are twisted by 36.83 (14) and 36.14 (13)° with respect to the planes of the remaining atoms of the cations. The tetra-hedral MnCl4 2- anion is slightly distorted with the Mn-Cl distances falling in the range 2.3469 (10)-2.3941 (9) Å. The distortion value of 0.044 relative to the ideal tetra-hedron was obtained by continuous shape measurement (CShM) analysis. In the crystal, the cations and anions form separate stacks propagating along the a-axis direction. The organic cations display weak π-π stacking. The anions, which are stacked identically one above the other, demonstrate loose packing; the minimum Mn⋯Mn separation in the cation stack is approximately 7.49 Å. The investigation of the fluorescent properties of a powdered sample of (I) showed no emission. X-band EPR data for (I) at 293 and 77 K revealed broad fine structure signals, indicating moderate zero-field splitting.
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Affiliation(s)
- Olga Yu. Vassilyeva
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Elena A. Buvaylo
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Vladimir N. Kokozay
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Svitlana R. Petrusenko
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Andrii K. Melnyk
- Institute for Sorption and Problems of Endoecology, the National Academy of Sciences of Ukraine, 13 General Naumov str., Kyiv 03164, Ukraine
| | - Brian W. Skelton
- School of Molecular Sciences, M310, University of Western Australia, Perth, WA 6009, Australia
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Sun Q, Zheng H, Hu X, Li J, Zhao R, Zhao C, Ding W. Magnetic Template Anion Polyacrylamide-Polydopamine-Fe 3O 4 Combined with Ultraviolet/H 2O 2 for the Rapid Enrichment and Degradation of Diclofenac Sodium from Aqueous Environment. Polymers (Basel) 2020; 12:E72. [PMID: 31906534 DOI: 10.3390/polym12010072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/15/2019] [Accepted: 12/22/2019] [Indexed: 12/27/2022] Open
Abstract
In this study, a novel system was set up by preparing a magnetic flocculant combining with ultraviolet/H2O2 to realize the rapid enrichment and degradation of diclofenac sodium (DCFS). For the magnetic flocculant, template anion polyacrylamide (TAPAM) with anion micro-block structure was prepared. Thereafter, polydopamine was used to modify TAPAM, Fe3O4 nanoparticles was grafted to the modified TAPAM by chelation, named template anion polyacrylamide-polydopamine-Fe3O4 (TAPAM-PDA-Fe3O4). Furthermore, the TAPAM-PDA-Fe3O4 preparation protocol was optimized by the response surface method (RSM). In the DCFS enrichment section, the rapid separation of flocs from water was realized by an external magnetic field and it indicated that the π–π stacking effect was dominant in neutral/alkaline condition, whereas charge neutralization was favored in acidic conditions. Meanwhile, a DCFS enrichment kinetic curve was much fitted by the pseudo-second-order kinetic model and DCFS enrichment isothermal curve was close to the Freundlich isothermal model, indicating the dependence of DCFS quantity enriched by TAPAM-PDA-Fe3O4 and a multilayer heterogeneous enrichment process. The degradation experiment confirmed that DCFS was effectively degraded by ultraviolet/H2O2/TAPAM-PDA-Fe3O4 and the maximum value of DCFS degradation efficiency reached 98.1%. Furthermore, the regeneration experiment showed that the enrichment and degradation efficiency of DCFS could maintain a relatively high level in the initial three recycles.
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Mutharani B, Ranganathan P, Chen SM, Sireesha P. Ultrasound-induced radicals initiated the formation of inorganic-organic Pr 2O 3/polystyrene hybrid composite for electro-oxidative determination of chemotherapeutic drug methotrexate. Ultrason Sonochem 2019; 56:410-421. [PMID: 31101279 DOI: 10.1016/j.ultsonch.2019.04.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/18/2019] [Accepted: 04/18/2019] [Indexed: 06/09/2023]
Abstract
To dates, the facile synthesis of inorganic-coated organic polymer composite has received greater attention in the order of research fields including advanced materials and electrochemical analysis owing to the complementary or synergistic effects. In this context, Pr2O3 and Pr2O3 coated polystyrene (Pr2O3/PS) inorganic-organic colloidal composite were prepared via ultrasound-induced radicals initiated precipitation and dispersion polymerization methods. The synthesized Pr2O3/PS composite was systematically studied by FE-SEM, TEM, EDX, FT-IR, XRD, and XPS analysis. This composite modified glassy carbon electrode (Pr2O3/PS GCE) was utilized to construct a novel electrochemical sensor for the detection assay of chemotherapy agent methotrexate (MTA). Under optimal condition, the designed sensor showed outstanding performance for MTA trace level detection over the linear concentration range of 0.01-236 µM with a detection limit of 0.8 nM for MTA. Furthermore, the prepared sensor accomplished excellent stability and relevant reproducibility, in addition to reliable practical assay in real human blood serum and urine samples. Besides, the possible MTA sensing mechanism of Pr2O3/PS GCE has been deliberated in detail. Our finding suggested that the developed Pr2O3/PS composite might be a favorable material for the fabrication of the high-performance electrochemical sensor.
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Affiliation(s)
- Bhuvanenthiran Mutharani
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Palraj Ranganathan
- Institute of Organic and Polymeric Materials and Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei, Taiwan, ROC
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
| | - Pedaballi Sireesha
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan, ROC
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Vassilyeva OY, Buvaylo EA, Kokozay VN, Skelton BW, Sobolev AN. Crystal structures of an imidazo[1,5- a]pyridinium-based ligand and its (C 13H 12N 3) 2[CdI 4] hybrid salt. Acta Crystallogr E Crystallogr Commun 2019; 75:1209-1214. [PMID: 31417794 PMCID: PMC6690455 DOI: 10.1107/s2056989019009964] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 07/11/2019] [Indexed: 11/10/2022]
Abstract
An organic–inorganic hybrid salt with two [L]2[CdI4] molecules in the asymmetric unit related by pseudosymmetry exhibits a layered structure. In the mixed chloride/nitrate salt, the one-dimensional hydrogen-bonding polymer built of anions and water molecules runs parallel to a column of stacked L+ cations. The monocation product of the oxidative condensation–cyclization between two molecules of pyridine-2-carbaldehyde and one molecule of CH3NH2·HCl in methanol, 2-methyl-3-(pyridin-2-yl)imidazo[1,5-a]pyridinium, was isolated in the presence of metal ions as bis[2-methyl-3-(pyridin-2-yl)imidazo[1,5-a]pyridin-2-ium] tetraiodocadmate, (C13H12N3)2[CdI4], (I), and the mixed chloride/nitrate salt, bis[2-methyl-3-(pyridin-2-yl)imidazo[1,5-a]pyridin-2-ium] 1.5-chloride 0.5-nitrate trihydrate, 2C13H12N3+·1.5Cl−·0.5NO3−·3H2O, (II). Hybrid salt (I) crystallizes in the space group P21/n with two [L]2[CdI4] molecules in the asymmetric unit related by pseudosymmetry. In the crystal of (I), layers of organic cations and of tetrahalometallate anions are stacked parallel to the ab plane. Antiparallel L+ cations disposed in a herring-bone pattern form π-bonded chains through aromatic stacking. In the inorganic layer, adjacent tetrahedral CdI4 units have no connectivity but demonstrate close packing of iodide anions. In the crystal lattice of (II), the cations are arranged in stacks propagating along the a axis; the one-dimensional hydrogen-bonded polymer built of chloride ions and water molecules runs parallel to a column of stacked cations.
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Affiliation(s)
- Olga Yu Vassilyeva
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Elena A Buvaylo
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Vladimir N Kokozay
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Brian W Skelton
- School of Molecular Sciences, M310, University of Western Australia, Perth, WA 6009, Australia
| | - Alexandre N Sobolev
- School of Molecular Sciences, M310, University of Western Australia, Perth, WA 6009, Australia
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Li P, Ge M, Lin D, Yang L. Functionalized acupuncture needle as a SERS-active platform for rapid and sensitive determination of adenosine triphosphate. Anal Bioanal Chem 2019; 411:5669-79. [PMID: 31250068 DOI: 10.1007/s00216-019-01945-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/04/2019] [Accepted: 05/24/2019] [Indexed: 10/26/2022]
Abstract
The development of sensitive and rapid methods for analysis and detection of small molecules is highly desirable for medical diagnostics and therapeutics. We report an acupuncture needle functionalized with gold nanoparticles (Au NPs) and a macrocyclic amine (MA) Raman tag as the platform to realize the sensitive detection of adenosine triphosphate (ATP) by surface-enhanced Raman spectroscopy (SERS). The assembled Au NPs with abundant hot spots on the surface of the needle avoids the aggregation of Au NPs and results in a good signal response. Moreover, there is strong combination between ATP and MA through electrostatic adsorption, hydrogen-bonding interactions, and π-π stacking, and as a consequence, this functionalized needle can be used as a SERS platform for detection of ATP (25 nM) through a decrease of the Raman signal of MA resulting from the high chemical affinity of ATP for MA. Specially, the Au NP/MA-functionalized needle is conveniently used to monitor ATP (100 nM) added to serum, and demonstrates great promise in the study and detection of ATP in a complex sample, laying the foundation for SERS applications in complex acupuncture specimens with fast response and simple operation. Graphical abstract.
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Lorenz V, Liebing P, Hilfert L, Busse S, Edelmann FT. An unsymmetrical dinuclear scandium complex comprising salophen ligands [H 2salophen = N, N'-bis-(salicyl-idene)-1,2-phenyl-enedi-amine]. Acta Crystallogr E Crystallogr Commun 2019; 75:175-178. [PMID: 30800446 PMCID: PMC6362673 DOI: 10.1107/s2056989019000094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 01/03/2019] [Indexed: 11/12/2022]
Abstract
Scandium nitrate tetrahydrate reacts with H2salophen [N,N′-bis(salicylidene)-1,2-phenylenediamine] in ethanol to give the unsymmetrical dinuclear complex Sc(NO3)2(μ-salophen)Sc(salophen)(EtOH). Treatment of scandium nitrate tetrahydrate with the tetradentate ligand H2salophen [N,N′-bis(salicylidene)-1,2-phenylenediamine] afforded the yellow dinuclear complex Sc(NO3)2(μ-salophen)Sc(salophen)(EtOH) or [Sc2(C20H14N2O2)2(NO3)2(C2H6O)] (systematic name: (ethanol-κO)bis(nitrato-κ2O,O′){μ-2,2′-[1,2-phenylenebis(nitrilomethanylylidene)]diphenolato-κ4N,N′,O,O′:κ2O,O′}{2,2′-[1,2-phenylenebis(nitrilomethanylylidene)]diphenolato-κ4O,N,N′,O′}discandium). In this compound, one salophen ligand displays a bridging coordination via the two oxygen atoms, while the other salophen ligand is attached to only one Sc center. This arrangement is stabilized by a hydrogen-bonded EtOH co-ligand, and by π–π stacking interactions between the two salophen ligands.
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Affiliation(s)
- Volker Lorenz
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
| | - Phil Liebing
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
| | - Liane Hilfert
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
| | - Sabine Busse
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
| | - Frank T Edelmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
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Yang D, Gao S, Fang Y, Lin X, Jin X, Wang X, Ke L, Shi K. The π-π stacking-guided supramolecular self-assembly of nanomedicine for effective delivery of antineoplastic therapies. Nanomedicine (Lond) 2018; 13:3159-3177. [PMID: 30411997 DOI: 10.2217/nnm-2018-0288] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
In traditional nano drug-delivery systems, the complex chemical bonds between drug and carrier often complicate the preparation process and are less prone to rupture upon entry into the target, which is detrimental to the timely release of the drug. The π-π stacking provides us with a promising alternative as it is a weak interaction between the aromatic rings. Since most antitumor drugs are hydrophobic molecules with complex aromatic π-π-conjugated structures, the construction of self-assembly based on π-π stacking between drugs and carriers has the advantage of improving the stability and drug loading capacity as well as the improvement of hydrophilicity and biosafety. This article introduces the recent advances in π-π stacking-guided nano self-assembly for antineoplastic delivery.
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Affiliation(s)
- Dongjuan Yang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning 117004, PR China
| | - Shan Gao
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning 117004, PR China
| | - Yan Fang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning 117004, PR China
| | - Xiaojie Lin
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning 117004, PR China
| | - Xuechao Jin
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning 117004, PR China
| | - Xiyan Wang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning 117004, PR China
| | - Liyuan Ke
- Pharmacy Department, Liaoning Cancer Hospital & Institue, Shenyang, Liaoning 110042, PR China
| | - Kai Shi
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning 117004, PR China
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Torres I, Ruiz M, Phan H, Dominguez N, Garcia J, Nguyen TQ, Evans H, Resendiz MJ, Baruah T, Metta A, Arif A, Noveron JC. Mesomorphic Behavior in Silver(I) N-(4-Pyridyl) Benzamide with Aromatic π⁻π Stacking Counterions. Materials (Basel) 2018; 11:E1666. [PMID: 30205605 DOI: 10.3390/ma11091666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/03/2018] [Accepted: 09/03/2018] [Indexed: 01/22/2023]
Abstract
Organic semiconductor materials composed of π–π stacking aromatic compounds have been under intense investigation for their potential uses in flexible electronics and other advanced technologies. Herein we report a new family of seven π–π stacking compounds of silver(I) bis-N-(4-pyridyl) benzamide with varying counterions, namely [Ag(NPBA)2]X, where NPBA is N-(4-pyridyl) benzamine, X = NO3− (1), ClO4− (2), CF3SO3− (3), PF6− (4), BF4− (5), CH3PhSO3− (6), and PhSO3− (7), which form extended π−π stacking networks in one-dimensional (1D), 2D and 3D directions in the crystalline solid-state via the phenyl moiety, with average inter-ring distances of 3.823 Å. Interestingly, the counterions that contain π–π stacking-capable groups, such as in 6 and 7, can induce the formation of mesomorphic phases at 130 °C in dimethylformamide (DMF), and can generate highly branched networks at the mesoscale. Atomic force microscopy studies showed that 2D interconnected fibers form right after nucleation, and they extend from ~30 nm in diameter grow to reach the micron scale, which suggests that it may be possible to stop the process in order to obtain nanofibers. Differential scanning calorimetry studies showed no remarkable thermal behavior in the complexes in the solid state, which suggests that the mesomorphic phases originate from the mechanisms that occur in the DMF solution at high temperatures. An all-electron level simulation of the band gaps using NRLMOL (Naval Research Laboratory Molecular Research Library) on the crystals gave 3.25 eV for (1), 3.68 eV for (2), 1.48 eV for (3), 5.08 eV for (4), 1.53 eV for (5), and 3.55 eV for (6). Mesomorphic behavior in materials containing π–π stacking aromatic interactions that also exhibit low-band gap properties may pave the way to a new generation of highly branched organic semiconductors.
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Chi-Duran I, Enriquez J, Vega A, Herrera F, Pratap Singh D. Hexa-aqua-zinc(II) dinitrate bis-[5-(pyridinium-3-yl)tetra-zol-1-ide]. Acta Crystallogr E Crystallogr Commun 2018; 74:1231-1234. [PMID: 30225106 PMCID: PMC6127703 DOI: 10.1107/s205698901801112x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 08/03/2018] [Indexed: 11/10/2022]
Abstract
Hexa-aqua-zinc(II) dinitrate 5-(pyridinium-3-yl)tetra-zol-1-ide, [Zn(H2O)6](NO3)2·2C6H5N5, crystallizes in the space group P . The asymmetric unit contains one zwitterionic 5-(pyridinium-3-yl)tetra-zol-1-ide mol-ecule, one NO3- anion and one half of a [Zn(H2O)6]2+ cation ( symmetry). The pyridinium and tetra-zolide rings in the zwitterion are nearly coplanar, with a dihedral angle of 5.4 (2)°. Several O-H⋯N and N-H⋯O hydrogen-bonding inter-actions exist between the [Zn(H2O)6]2+ cation and the N atoms of the tetra-zolide ring, and between the nitrate anions and the N-H groups of the pyridinium ring, respectively, giving rise to a three-dimensional network. The 5-(pyridinium-3-yl)tetra-zol-1-ide mol-ecules show parallel-displaced π-π stacking inter-actions; the centroid-centroid distance between adjacent tetra-zolide rings is 3.6298 (6) Å and that between the pyridinium and tetra-zolide rings is 3.6120 (5) Å.
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Affiliation(s)
- Ignacio Chi-Duran
- Department of Physics, University of Santiago, Av. Ecuador 3493, Estación Central, Santiago, Chile
| | - Javier Enriquez
- Department of Physics, University of Santiago, Av. Ecuador 3493, Estación Central, Santiago, Chile
| | - Andres Vega
- Departamento de Ciencias Quimicas, Universidad Nacional Andres Bello, Av Republica 275 3er Piso, Santiago, Region Metropolitana, Chile
| | - Felipe Herrera
- Department of Physics, University of Santiago, Av. Ecuador 3493, Estación Central, Santiago, Chile
- Millennium Institute for Research in Optics (MIRO), Chile
| | - Dinesh Pratap Singh
- Department of Physics, University of Santiago, Av. Ecuador 3493, Estación Central, Santiago, Chile
- Millennium Institute for Research in Optics (MIRO), Chile
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Hauptvogel I, Seichter W, Weber E. Crystal structures of dimethyl 5-iodo-iso-phthal-ate and dimethyl 5-ethynyl-iso-phthal-ate. Acta Crystallogr E Crystallogr Commun 2018; 74:1093-1096. [PMID: 30116569 PMCID: PMC6073011 DOI: 10.1107/s205698901800912x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 06/22/2018] [Indexed: 11/10/2022]
Abstract
In dimethyl 5-iodo-isophthalate, C10H9IO4, (I), the planes through the methyl carboxyl-ate moieties are tilted with respect to the benzene ring, whereas the mol-ecular framework of dimethyl 5-ethynylisophthalate, C12H10O4, (II), is perfectly planar. The crystal structure of (I) is stabilized by a three-dimensional supra-molecular network comprising C-H⋯O=C hydrogen bonds, as well as I⋯O=C inter-actions. In the crystal of (II), the mol-ecules are connected via C-Hethyn-yl⋯O=C hydrogen bonds to infinite strands. Moreover, π-π arene stacking inter-actions connect the mol-ecular chains into two-dimensional supra-molecular aggregates.
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Affiliation(s)
- Ines Hauptvogel
- TU Bergakademie Freiberg, Leipziger Str. 29, D-09596 Freiberg/Sachsen, Germany
| | - Wilhelm Seichter
- TU Bergakademie Freiberg, Leipziger Str. 29, D-09596 Freiberg/Sachsen, Germany
| | - Edwin Weber
- TU Bergakademie Freiberg, Leipziger Str. 29, D-09596 Freiberg/Sachsen, Germany
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Atioğlu Z, Akkurt M, Toze FAA, Huseynov FE, Hajiyeva SF. Crystal structure and Hirshfeld surface analysis of ethane-1,2-diaminium 3-[2-(1,3-dioxo-1,3-di-phenyl-propan-2-yl-idene)hydrazin-yl]-5-nitro-2-oxido-benzene-sulfonate dihydrate. Acta Crystallogr E Crystallogr Commun 2018; 74:1021-1025. [PMID: 30002908 PMCID: PMC6038648 DOI: 10.1107/s2056989018009118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 06/22/2018] [Indexed: 11/10/2022]
Abstract
In the anion of the title hydrated salt, C2H10N22+·C21H13N3O8S2-·2H2O, the planes of the phenyl rings and the benzene ring of the 5-nitro-2-oxido-benzene-sulfonate group are inclined to one another by 44.42 (11), 56.87 (11) and 77.70 (12)°. In the crystal, the anions are linked to the cations and the water mol-ecules by N-H⋯O and O-H⋯O hydrogen bonds, forming a three-dimensional network. Furthermore, there are face-to-face π-π stacking inter-actions between the centroids of one phenyl ring and the benzene ring of the 5-nitro-2-oxido-benzene-sulfonate group [centroid-centroid distance = 3.8382 (13) Å and slippage = 1.841 Å]. A Hirshfeld surface analysis was conducted to verify the contributions of the different inter-molecular inter-actions.
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Affiliation(s)
- Zeliha Atioğlu
- İlke Education and Health Foundation, Cappadocia University, Cappadocia Vocational College, The Medical Imaging Techniques Program, 50420 Mustafapaşa, Ürgüp, Nevşehir, Turkey
| | - Mehmet Akkurt
- Department of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey
| | - Flavien A. A. Toze
- Department of Chemistry, Faculty of Sciences, University of Douala, PO Box 24157, Douala, Republic of , Cameroon
| | - Fatali E. Huseynov
- Department of Ecology and Soil Sciences, Baku State University, Z. Xalilov Str. 23, Az 1148 Baku, Azerbaijan
| | - Sarvinaz F. Hajiyeva
- Organic Chemistry Department, Baku State University, Z. Xalilov Str. 23, Az 1148 Baku, Azerbaijan
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Kachi-Terajima C, Kimura N. Crystal structures of two isotypic lanthanide(III) complexes: tri-aqua-[2,6-di-acetyl-pyridine bis-(benzoyl-hydrazone)]methano-llanthanide(III) trichloride methanol disolvates ( LnIII = Tb and Dy). Acta Crystallogr E Crystallogr Commun 2018; 74:535-538. [PMID: 29765761 PMCID: PMC5946983 DOI: 10.1107/s2056989018004103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 03/11/2018] [Indexed: 12/01/2022]
Abstract
The title lanthanide complexes, [Ln(DAPBH2)(CH3OH)(H2O)3]Cl3·2CH3OH [LnIII = Tb and Dy; DAPBH2 = 2,6-di-acetyl-pyridine bis-(benzoyl-hydrazone), C23H21N5O2], are isotypic. The central lanthanide ions are nine-coordinate, being ligated by three N and two O atoms from the penta-dentate DAPBH2 ligand, and four O atoms from the coordinated methanol mol-ecule and three coordinated water mol-ecules. The coordination geometry of the lanthanide ion is a distorted capped square anti-prism. In the crystals, the various components are linked by O-H⋯Cl, N-H⋯Cl and O-H⋯O hydrogen bonds, forming three-dimensional supra-molecular frameworks. Within the frameworks, there are C-H⋯Cl and C-H⋯O hydrogen bonds and offset π-π inter-actions (inter-centroid distance ca 3.81 Å).
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Affiliation(s)
- Chihiro Kachi-Terajima
- Department of Chemistry, Faculty of Science, Toho University, Miyama, Funabashi, Chiba 274-8510, Japan
| | - Norihisa Kimura
- Department of Chemistry, Faculty of Science, Toho University, Miyama, Funabashi, Chiba 274-8510, Japan
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Chotima R, Boonseng B, Piyasaengthong A, Songsasen A, Chainok K. Crystal structure of 3-[2-(1,3-thia-zol-2-yl)diazen-1-yl]pyridine-2,6-di-amine monohydrate. Acta Crystallogr E Crystallogr Commun 2018; 74:563-565. [PMID: 29765768 PMCID: PMC5946990 DOI: 10.1107/s2056989018004693] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 03/22/2018] [Indexed: 11/16/2022]
Abstract
In the title hydrated azo compound, C8H8N6S·H2O, the two aromatic groups are close to coplanar with the dihedral angle between the mean planes of the thia-zole and pyridine rings being 2.9 (2)°. The organic mol-ecule adopts an E configuration with respect to the double bond of the azo bridge. In the crystal, mol-ecules are linked by (amine)N-H⋯N(pyridine), (amine)N-H⋯O(water) and (water)O-H⋯N(thia-zole) hydrogen bonds along with π-π inter-actions involving pairs of thia-zole rings and pairs of pyridine rings. The plane-to-plane distance between two parallel mol-ecules is 3.7856 (4) Å and corresponds to the length of the a axis. In this way, a layer structure parallel to (010) is formed. The layers are linked by weak C-H⋯S hydrogen bonds, eventually resulting in a three-dimensional network.
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Affiliation(s)
- Ratanon Chotima
- Department of Chemistry, Faculty of Science, Naresuan University, Muang, Phitsanulok 65000, Thailand
| | - Bussaba Boonseng
- Department of Chemistry, Faculty of Science, Naresuan University, Muang, Phitsanulok 65000, Thailand
| | - Akkharadet Piyasaengthong
- Department of Chemistry, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| | - Apisit Songsasen
- Department of Chemistry, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| | - Kittipong Chainok
- Materials and Textile Technology, Faculty of Science and Technology, Thammasat University, Khlong Luang, Pathum Thani 12121, Thailand
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Fangmann P, Schmidtmann M, Beckhaus R. Crystal structures of 2,3,8,9,14,15-hexa-methyl-5,6,11,12,17,18-hexa-aza-tri-naphthyl-ene and 2,3,8,9,14,15-hexa-phenyl-5,6,11,12,17,18-hexa-za-tri-naphthyl-ene di-chloro-methane disolvate. Acta Crystallogr E Crystallogr Commun 2018; 74:167-171. [PMID: 29850046 PMCID: PMC5956329 DOI: 10.1107/s2056989018000725] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 01/11/2018] [Indexed: 01/10/2023]
Abstract
The crystal structures of two substituted HATN (hexa-aza-tri-naphthyl-ene) derivatives, namely 2,3,8,9,14,15-hexa-methyl- and 2,3,8,9,14,15-hexa-phenyl-5,6,11,12,17,18- hexa-zatri-naphthyl-ene (HATNMe6 and HATNPh6), are reported. Whereas the structure of the methyl-substituted derivative (HATNMe6) contains no solvent mol-ecules (C30H24N6), the hexa-phenyl-substituted structure (HATNPh6) contains two mol-ecules of di-chloro-methane (C60H36N6·2CH2Cl2). This class of planar bridging ligands is known for its electron-deficient systems and its ability to form π-π stacking inter-actions. Indeed, in both crystal structures strong π-π stacking inter-actions are observed, but with different packing features. The di-chloro-methane mol-ecules in the crystal structure of HATNPh6 are situated in the voids and are involved in C-H⋯N contacts to the nitro-gen atoms of the pyrazine units.
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Affiliation(s)
- Pia Fangmann
- Institut für Chemie, Fakultät für Mathematik und Naturwissenschaften, Carl von Ossietzky Universit t Oldenburg, 26129 Oldenburg, Germany
| | - Marc Schmidtmann
- Institut für Chemie, Fakultät für Mathematik und Naturwissenschaften, Carl von Ossietzky Universit t Oldenburg, 26129 Oldenburg, Germany
| | - Rüdiger Beckhaus
- Institut für Chemie, Fakultät für Mathematik und Naturwissenschaften, Carl von Ossietzky Universit t Oldenburg, 26129 Oldenburg, Germany
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Sagar BK, Yathirajan HS, Rathore RS, Glidewell C. Four closely related N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)benzamides: order versus disorder, and similar molecular conformations but different modes of supramolecular aggregation, with a new disordered refinement of 2-amino-3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophene. Acta Crystallogr C Struct Chem 2018; 74:45-53. [PMID: 29303496 DOI: 10.1107/s2053229617017326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 12/03/2017] [Indexed: 11/10/2022]
Abstract
Four closely related N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)benzamides, bearing different substituents on the benzamide ring, have been synthesized and structurally characterized. In each of N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-3-fluorobenzamide, C22H18FNO2S, (I), N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-4-chlorobenzamide, C22H18ClNO2S, (II), N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-2,6-difluorobenzamide, C22H17F2NO2S, (III), and N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-2-methoxybenzamide, C23H21NO3S, (IV), the last of which crystallizes with Z' = 2 in the space group P-1, the fused six-membered ring adopts a half-chair conformation. In each of (I)-(III), this ring is disordered over two sets of atomic sites having occupancies of 0.811 (6) and 0.189 (6) in (I), 0.645 (7) and 0.355 (7) in (II), and 0.784 (6) and 0.216 (6) in (III), such that the two disorder components of the ring are almost enantiomeric. Molecules of (I) are linked into chains by π-π stacking interactions, and those of (II) are linked into chains by a C-H...π hydrogen bond. A combination of two C-H...O hydrogen bonds and two C-H...π hydrogen bonds links the molecules of (III) into complex sheets, but the molecules of (IV) are linked by a combination of two hydrogen bonds, one each of the C-H...O and C-H...π types, to form centrosymmetric tetramers. The structures of (I)-(IV) are compared with that of the unsubstituted analogue N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)benzamide and a new refinement of the parent amine 2-amino-3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophene, using the original data set, has found that here too the fused six-membered ring exhibits conformational disorder, with occupancies of 0.887 (9) and 0.113 (9). Comparisons are made with some related compounds.
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Affiliation(s)
- Belakavadi K Sagar
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru 570 006, India
| | - Hemmige S Yathirajan
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru 570 006, India
| | - Ravindranath S Rathore
- Centre for Biological Sciences (Bioinformatics), School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Patna 800 014, India
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Nakagawa H, Kitamura C. Crystal structures of 1-hy-droxy-4-prop-yloxy-9,10-anthra-quinone and its acetyl derivative. Acta Crystallogr E Crystallogr Commun 2017; 73:1845-1849. [PMID: 29250400 PMCID: PMC5730237 DOI: 10.1107/s2056989017015973] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 11/02/2017] [Indexed: 11/10/2022]
Abstract
1-Hy-droxy-4-prop-yloxy-9,10-anthra-quinone, C17H14O4, (I), and its acetyl derivative, 4-acet-yloxy-4-prop-yloxy-9,10-anthra-quinone, C19H16O5, (II), were synthesized from the commercially available dye quinizarin. In both compounds, the anthra-quinone frameworks are close to planarity. There is a large difference in the conformation of the prop-yloxy group; the mol-ecule of (I) adopts a gauche conformation [O-C-C-C = -64.4 (2)°], although the mol-ecule of (II) takes a trans-planar conformation (zigzag) [O-C-C-C = 176.1 (3)°]. In the mol-ecule of (I), there is an intra-molecular O-H⋯O hydrogen bond. In both crystals, the mol-ecules are linked by C-H ⋯O hydrogen bonds. A difference in the mol-ecular arrangements of (I) and (II) is found along the stacking directions.
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Affiliation(s)
- Hidemi Nakagawa
- Department of Materials Science, School of Engineering, The University of Shiga Prefecture, 2500 Hassaka-cho, Hikone, Shiga 522-8533, Japan
| | - Chitoshi Kitamura
- Department of Materials Science, School of Engineering, The University of Shiga Prefecture, 2500 Hassaka-cho, Hikone, Shiga 522-8533, Japan
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Liu FY, Zhou DM, Zhao XL, Kou JF. Complexes of nickel(II) and copper(II) with 1,2,4-triazole-3-carboxylic acid and of cobalt(III) with 3-amino-1,2,4-triazole-5-carboxylic acid. Acta Crystallogr C Struct Chem 2017; 73:1010-1016. [PMID: 29111534 DOI: 10.1107/s2053229617012943] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 09/11/2017] [Indexed: 11/10/2022]
Abstract
Because of their versatile coordination modes and strong coordination ability for metals, triazole ligands can provide a wide range of possibilities for the construction of metal-organic frameworks. Three transition-metal complexes, namely bis(μ-1,2,4-triazol-4-ide-3-carboxylato)-κ3N2,O:N1;κ3N1:N2,O-bis[triamminenickel(II)] tetrahydrate, [Ni2(C3HN3O2)2(NH3)6]·4H2O, (I), catena-poly[[[diamminediaquacopper(II)]-μ-1,2,4-triazol-4-ide-3-carboxylato-κ3N1:N4,O-[diamminecopper(II)]-μ-1,2,4-triazol-4-ide-3-carboxylato-κ3N4,O:N1] dihydrate], {[Cu2(C3HN3O2)2(NH3)4(H2O)2]·2H2O}n, (II), (μ-5-amino-1,2,4-triazol-1-ide-3-carboxylato-κ2N1:N2)di-μ-hydroxido-κ4O:O-bis[triamminecobalt(III)] nitrate hydroxide trihydrate, [Co2(C3H2N4O2)(OH)2(NH3)6](NO3)(OH)·3H2O, (III), with different structural forms have been prepared by the reaction of transition metal salts, i.e. NiCl2, CuCl2 and Co(NO3)2, with 1,2,4-triazole-3-carboxylic acid or 3-amino-1,2,4-triazole-5-carboxylic acid hemihydrate in aqueous ammonia at room temperature. Compound (I) is a dinuclear complex. Extensive O-H...O, O-H...N and N-H...O hydrogen bonds and π-π stacking interactions between the centroids of the triazole rings contribute to the formation of the three-dimensional supramolecular structure. Compound (II) exhibits a one-dimensional chain structure, with O-H...O hydrogen bonds and weak O-H...N, N-H...O and C-H...O hydrogen bonds linking anions and lattice water molecules into the three-dimensional supramolecular structure. Compared with compound (I), compound (III) is a structurally different dinuclear complex. Extensive N-H...O, N-H...N, O-H...N and O-H...O hydrogen bonding occurs in the structure, leading to the formation of the three-dimensional supramolecular structure.
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Affiliation(s)
- Feng Yi Liu
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, People's Republic of China
| | - Dong Mei Zhou
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, People's Republic of China
| | - Xiao Lan Zhao
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, People's Republic of China
| | - Jun Feng Kou
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, People's Republic of China
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Pinto M, Chakraborty I, Martinez-Gonzalez J, Mascharak P. Synthesis and structures of photoactive rhenium carbonyl complexes derived from 2-(pyridin-2-yl)-1,3-benzothiazole, 2-(quinolin-2-yl)-1,3-benzothiazole and 1,10-phenanthroline. Acta Crystallogr C Struct Chem 2017; 73:923-929. [PMID: 29111520 DOI: 10.1107/s2053229617014644] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 10/10/2017] [Indexed: 11/10/2022]
Abstract
Carbon monoxide (CO) has recently been identified as a gaseous signaling molecule that exerts various salutary effects in mammalian pathophysiology. Photoactive metal carbonyl complexes (photoCORMs) are ideal exogenous candidates for more controllable and site-specific CO delivery compared to gaseous CO. Along this line, our group has been engaged for the past few years in developing group-7-based photoCORMs towards the efficient eradication of various malignant cells. Moreover, several such complexes can be tracked within cancerous cells by virtue of their luminescence. The inherent luminecscent nature of some photoCORMs and the change in emission wavelength upon CO release also provide a covenient means to track the entry of the prodrug and, in some cases, both the entry and CO release from the prodrug. In continuation of the research circumscribing the development of trackable photoCORMs and also to graft such molecules covalently to conventional delivery vehicles, we report herein the synthesis and structures of three rhenium carbonyl complexes, namely, fac-tricarbonyl[2-(pyridin-2-yl)-1,3-benzothiazole-κ2N,N'](4-vinylpyridine-κN)rhenium(I) trifluoromethanesulfonate, [Re(C7H7N)(C12H8N2S)(CO)3](CF3SO3), (1), fac-tricarbonyl[2-(quinolin-2-yl)-1,3-benzothiazole-κ2N,N'](4-vinylpyridine-κN)rhenium(I) trifluoromethanesulfonate, [Re(C7H7N)(C16H10N2S)(CO)3](CF3SO3), (2), and fac-tricarbonyl[1,10-phenanthroline-κ2N,N'](4-vinylpyridine-κN)rhenium(I) trifluoromethanesulfonate, [Re(C7H7N)(C12H8N2)(CO)3](CF3SO3), (3). In all three complexes, the ReI center resides in a distorted octahedral coordination environment. These complexes exhibit CO release upon exposure to low-power UV light. The apparent CO release rates of the complexes have been measured to assess their comparative CO-donating capacity. The three complexes are highly luminescent and this in turn provides a convenient way to track the entry of the prodrug molecules within biological targets.
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Affiliation(s)
- Miguel Pinto
- Department of Chemistry & Biochemistry, Univeristy of California Santa Cruz, CA 95064, USA
| | - Indranil Chakraborty
- Department of Chemistry & Biochemistry, Univeristy of California Santa Cruz, CA 95064, USA
| | | | - Pradip Mascharak
- Department of Chemistry & Biochemistry, Univeristy of California Santa Cruz, CA 95064, USA
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Rosin R, Seichter W, Mazik M. Crystal structures of the dioxane hemisolvates of N-(7-bromo-methyl-1,8-naphthyridin-2-yl)acetamide and bis-[ N-(7-di-bromo-methyl-1,8-naphthyridin-2-yl)acetamide]. Acta Crystallogr E Crystallogr Commun 2017; 73:1409-1413. [PMID: 29250347 PMCID: PMC5730284 DOI: 10.1107/s2056989017012208] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Accepted: 08/22/2017] [Indexed: 11/10/2022]
Abstract
The syntheses and crystal structures of N-(7-bromo-methyl-1,8-naphthyridin-2-yl)acetamide dioxane hemisolvate, C11H10BrN3O·0.5C4H8O2, (I), and bis-[N-(7-di-bromo-methyl-1,8-naphthyridin-2-yl)acetamide] dioxane hemisolvate, 2C11H9Br2N3O·0.5C4H8O2, (II), are described. The mol-ecules adopt a conformation with the N-H hydrogen pointing towards the lone electron pair of the adjacent naphthyridine N atom. The crystals of (I) are stabilized by a three-dimensional supra-molecular network comprising N-H⋯N, C-H⋯N and C-H⋯O hydrogen bonds, as well as C-Br⋯π halogen bonds. The crystals of compound (II) are stabilized by a three-dimensional supra-molecular network comprising N-H⋯N, C-H⋯N and C-H⋯O hydrogen bonds, as well as C-H⋯π contacts and C-Br⋯π halogen bonds. The structure of the substituent attached in the 7-position of the naphthyridine skeleton has a fundamental influence on the pattern of inter-molecular noncovalent bonding. While the Br atom of (I) participates in weak C-Br⋯Oguest and C-Br⋯π contacts, the Br atoms of compound (II) are involved in host-host inter-actions via C-Br⋯O=C, C-Br⋯N and C-Br⋯π bonding.
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Affiliation(s)
- Robert Rosin
- Institut für Organische Chemie, Technische Universität Bergakademie Freiberg, Leipziger Strasse 29, D-09596 Freiberg/Sachsen, Germany
| | - Wilhelm Seichter
- Institut für Organische Chemie, Technische Universität Bergakademie Freiberg, Leipziger Strasse 29, D-09596 Freiberg/Sachsen, Germany
| | - Monika Mazik
- Institut für Organische Chemie, Technische Universität Bergakademie Freiberg, Leipziger Strasse 29, D-09596 Freiberg/Sachsen, Germany
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Prytula-Kurkunova AY, Trush VA, Dyakonenko VV, Sliva TY, Amirkhanov VM. Tris( N-{bis-[meth-yl(phen-yl)amino]-phosphor-yl}benzene-sulfonamidato-κ 2O, O')(1,10-phenanthroline-κ 2N, N')lanthanum(III). Acta Crystallogr E Crystallogr Commun 2017; 73:1076-1081. [PMID: 28775887 PMCID: PMC5499295 DOI: 10.1107/s2056989017008970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 06/15/2017] [Indexed: 11/10/2022]
Abstract
The asymmetric unit of [La(C20H21N3O3PS)3(C12H8N2)] is created by one LaIII ion, three deprotonated N-{bis-[meth-yl(phen-yl)amino]-phosphor-yl}benzene-sulfonamidate (L-) ligands and one 1,10-phenanthroline (Phen) mol-ecule. Each LaIII ion is eight-coordinated (6O+2N) by three phosphoryl O atoms, three sulfonyl O atoms of three L- ligands and two N atoms of the chelating Phen ligand, leading to the formation of six- and five-membered metallacycles, respectively. The lanthanum coordination polyhedron has a bicapped trigonal-prismatic geometry. 'Sandwich-like' intra-molecular π-π stacking inter-actions are observed between the 1,10-phenanthroline ligand and two benzene rings of two different L- ligands. The phenyl rings of L- that are not involved in the stacking inter-actions show minor positional disorder. Mol-ecules form layers parallel to the (010) plane due to weak C-H⋯O inter-molecular hydrogen bonds. Unidentified highly disordered solvate mol-ecules that occupy ca 400 Å3 large voids have been omitted from the refinement model.
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Affiliation(s)
| | - Victor A. Trush
- National Taras Shevchenko University of Kyiv, Department of Chemistry, 12 Lva Tolstogo str., 01033 Kyiv, Ukraine
| | | | - Tetyana Yu. Sliva
- National Taras Shevchenko University of Kyiv, Department of Chemistry, 12 Lva Tolstogo str., 01033 Kyiv, Ukraine
| | - Vladimir M. Amirkhanov
- National Taras Shevchenko University of Kyiv, Department of Chemistry, 12 Lva Tolstogo str., 01033 Kyiv, Ukraine
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Zhang F, Zhang BG. Crystal structure of a heterometallic coordination polymer: poly[di-aqua-bis-(μ 7-benzene-1,3,5-tri-carboxyl-ato)dicalcium(II)copper(II)]. Acta Crystallogr E Crystallogr Commun 2017. [PMID: 28638639 PMCID: PMC5458304 DOI: 10.1107/s205698901700665x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The CaO6 polyhedron and CuO4 quadrilateral are connected by the benzene-1,3,5-tricarboxylate anions to give a three-dimensional polymeric complex. In the title complex, [Ca2Cu(C9H3O6)2(H2O)2]n, the CaII and CuII cations are bridged by the benzene-1,3,5-tricarboxylate anions (BTC3−) to form the coordination polymer, in which each BTC3− anion bridges two CuII and five CaII cations with a μ7 coordination mode. The CuII cation, located at an inversion centre, is in a nearly square-planar geometry defined by four O atoms from four bridging BTC3− anions, while the CaII cation is in a distorted octahedral geometry defined by five O atoms from bridging BTC3− anions and one water molecule. O—H⋯O hydrogen bonds between coordinating water molecules and carboxyl groups further stabilize the structure; π–π stacking is also observed between parallel benzene rings, the centroid-to-centroid distance being 3.357 (2) Å.
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Affiliation(s)
- Feng Zhang
- Key Laboratory of Catalysis and Materials Sciences of the State Ethnic Affairs Commission & Ministry of Education, College of Chemistry and Material Science, South-Central University for Nationalities, Wuhan 430074, People's Republic of China
| | - Bing-Guang Zhang
- Key Laboratory of Catalysis and Materials Sciences of the State Ethnic Affairs Commission & Ministry of Education, College of Chemistry and Material Science, South-Central University for Nationalities, Wuhan 430074, People's Republic of China
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Sanchez Montilva OC, Movilla F, Rodriguez MG, Di Salvo F. Synthesis, crystal structure and study of the crystal packing in the complex bis(4-aminopyridine-κN 1)dichloridocobalt(II). Acta Crystallogr C Struct Chem 2017; 73:399-406. [PMID: 28469066 DOI: 10.1107/s2053229617004880] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 03/29/2017] [Indexed: 11/10/2022] Open
Abstract
Despite the large number of reported crystalline structures of coordination complexes bearing pyridines as ligands, the relevance of π-π interactions among these hereroaromatic systems in the stabilization of their supramolecular structures and properties is not very well documented in the recent literature. The title compound, [CoCl2(C5H6N2)2], was obtained as bright-blue crystals suitable for single-crystal X-ray diffraction analysis from the reaction of 4-aminopyridine with cobalt(II) chloride in ethanol. The new complex was fully characterized by a variety of spectroscopic techniques and single-crystal X-ray diffraction. The crystal structure showed a tetrahedral complex stabilized mainly by bidimensional motifs constructed by π-π interactions with large horizontal displacements between the 4-aminopyridine units, and N-H...Cl hydrogen bonds. Other short contacts, such as C-H...Cl interactions, complete the three-dimensional arrangement. The supramolecular investigation was extended by statistical studies using the Cambridge Structural Database and a Hirshfeld surface analysis.
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Affiliation(s)
- Olga Carolina Sanchez Montilva
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Buenos Aires, Argentina
| | - Federico Movilla
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Buenos Aires, Argentina
| | - Maricel Gabriela Rodriguez
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Buenos Aires, Argentina
| | - Florencia Di Salvo
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Buenos Aires, Argentina
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Vrijdag J, Van den Bogaert A, De Borggraeve W, Van Meervelt L. Crystal structure of 5-benzyl-8-bromo-2-meth-yl-1,3-oxazolo[4,5- c][1,8]naphthyridin-4(5 H)-one. Acta Crystallogr E Crystallogr Commun 2017; 73:687-690. [PMID: 28529776 PMCID: PMC5418784 DOI: 10.1107/s2056989017005023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 03/31/2017] [Indexed: 11/10/2022]
Abstract
The title compound, C17H12BrN3O2, was unexpectedly isolated during an attempt to synthesize pyridodiazepinediones and identified as an oxazolonaphthyridinone derivative. The almost planar oxazolonaphthyridinone ring (r.m.s. deviation = 0.016 Å) makes a dihedral angle of 61.6 (2)° with the phenyl ring. In the crystal, columns of mol-ecules stacked along the a axis are formed by π-π inter-actions between the six-membered rings of the oxazolonaphthyridone moieties [centroid-to-centroid distances = 3.494 (2)-3.906 (3) Å], which further inter-act through C-H⋯π contacts with the phenyl rings.
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Affiliation(s)
- Johannes Vrijdag
- KU Leuven - University of Leuven, Department of Chemistry, Celestijnenlaan 200F - bus 2404, B-3001 Heverlee, Belgium
| | - An Van den Bogaert
- KU Leuven - University of Leuven, Department of Chemistry, Celestijnenlaan 200F - bus 2404, B-3001 Heverlee, Belgium
| | - Wim De Borggraeve
- KU Leuven - University of Leuven, Department of Chemistry, Celestijnenlaan 200F - bus 2404, B-3001 Heverlee, Belgium
| | - Luc Van Meervelt
- KU Leuven - University of Leuven, Department of Chemistry, Celestijnenlaan 200F - bus 2404, B-3001 Heverlee, Belgium
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Bauri AK, Foro S, Rahman AFMM. Crystal structure of di-bromo-meth-oxy-seselin (DBMS), a photobiologically active pyran-ocoumarin. Acta Crystallogr E Crystallogr Commun 2017; 73:774-776. [PMID: 28529796 PMCID: PMC5418804 DOI: 10.1107/s2056989017006132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 04/24/2017] [Indexed: 11/11/2022]
Abstract
The title compound, C15H14Br2O4 [systematic name: rac-(9S,10R)-3,9-dibromo-10-methoxy-8,8-dimethyl-9,10-dihydropyrano[2,3-h]chromen-2(8H)-one], is a pyran-ocoumarin derivative formed by the bromination of seselin, which is a naturally occurring angular pyran-ocoumarin isolated from the Indian herb Trachyspermum stictocarpum. In the mol-ecule, the benzo-pyran ring system is essentially planar, with a maximum deviation of 0.044 (2) Å for the O atom. The di-hydro-pyran ring is in a half-chair conformation and the four essentially planar atoms of this ring form a dihedral angle of 4.6 (2)° with the benzo-pyran ring system. In the crystal, mol-ecules are linked by weak C-H⋯O hydrogen bonds, forming chains propagating along [010]. In addition, π-π stacking inter-actions, with centroid-centroid distances of 3.902 (2) and 3.908 (2) Å, link the hydrogen-bonded chains into layers parallel to (001).
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Affiliation(s)
- A. K. Bauri
- Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Sabine Foro
- Institute of Materials Science, Darmstadt University of Technology, Alarich-Weiss-Strasse 2, D-64287 Darmstadt, Germany
| | - A. F. M. M. Rahman
- Department of Applied Chemistry & Chemical Engineering, University of Dhaka, Dhaka-1000, Bangladesh
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Kai K, Hamaguchi T, Ando I. Crystal structure of bis-(1,10-phenanthroline-κ 2N, N')(1,3-thia-zole-2-thiol-ato-κ 2S2, N)nickel(II) hexa-fluorido-phosphate 1,4-dioxane sesquisolvate. Acta Crystallogr E Crystallogr Commun 2017; 73:590-593. [PMID: 28435727 PMCID: PMC5382628 DOI: 10.1107/s205698901700456x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 03/22/2017] [Indexed: 11/16/2022]
Abstract
2-Mercaptothiazolate is generally used as a monodentate and bridging ligand. We report here the crystal structure of a new type of nickel(II) complex in which the 2-mercaptothiazolate ligand acts as a chelating and non-bridging ligand. The title salt, [Ni(C3H2NS2)(C12H8N2)2]PF6·1.5C4H8O2, was the unexpected product on making an attempt to prepare an [Ni(2-mercaptothiazolate)(1,10-phenanthroline)]+ complex by reaction of [NiCl2(1,10-phenanthroline)] with 2-mercaptothiazolate. In the resulting complex, the 2-mercaptothiazolate anion acts as a chelating ligand, which coordinates to the NiII ion with the thiazolyl N and thiolate S atoms. In the crystal, π–π stacking interactions between the coordinating 1,10-phenanthroline molecules of adjacent complexes result in a zigzag chain running parallel to the c axis. Weak C—H⋯X (X = O, F) hydrogen-bonding interactions between the chains and 1,4-dioxane solvent molecules and PF6− counter-anions lead to the formation of sheets parallel to the ac plane.
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Affiliation(s)
- Keisuke Kai
- Department of Chemistry, Faculty of Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Tomohiko Hamaguchi
- Department of Chemistry, Faculty of Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Isao Ando
- Department of Chemistry, Faculty of Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
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Faizi MSH, Ali A, Potaskalov VA. Crystal structure of (2,2'-bi-pyridine-κ 2N, N')bis-(3,5-di- tert-butyl- o-benzo-quinonato-κ 2O, O')ruthenium(II). Acta Crystallogr E Crystallogr Commun 2017; 73:459-462. [PMID: 28316832 PMCID: PMC5347077 DOI: 10.1107/s205698901700281x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 02/20/2017] [Indexed: 06/06/2023]
Abstract
In the title mononuclear complex, [Ru(C14H20O2)2(C10H8N2)], the RuII ion has a distorted octa-hedral coordination environment defined by two N atoms of the chelating 2,2'-bi-pyridine ligand and four O atoms from two 3,5-di-tert-butyl-o-benzo-quinone ligands. In the crystal, the complex mol-ecules are linked by inter-molecular C-H⋯O hydrogen bonds and π-π stacking inter-actions between the 2,2'-bi-pyridine ligands [centroid-centroid distance = 3.538 (3) Å], resulting in a layer structure extending parallel to the ab plane.
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Affiliation(s)
- Md. Serajul Haque Faizi
- Department of Chemistry, College of Science, Sultan Qaboos University, PO Box 36, Al-Khod 123, Muscat, Sultanate of Oman
| | - Akram Ali
- Department of Chemistry, Indian Institute of Technology, Kanpur 208 016 UP, India
| | - Vadim A. Potaskalov
- Department of General and Inorganic Chemistry, National Technical University of Ukraine, Kyiv Polytechnic Institute, 37 Prospect Peremogy, 03056 Kiev, Ukraine
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Bahoussi RI, Djafri A, Chouaih A, Djafri A, Hamzaoui F. Crystal structure and Hirshfeld surface analysis of ethyl 2-{[4-ethyl-5-(quinolin-8-yloxymeth-yl)-4 H-1,2,4-triazol-3-yl]sulfan-yl}acetate. Acta Crystallogr E Crystallogr Commun 2017; 73:173-176. [PMID: 28217336 PMCID: PMC5290559 DOI: 10.1107/s205698901700041x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 01/09/2017] [Indexed: 11/26/2022]
Abstract
In the title compound, C18H20N4O3S, the 1,2,4-triazole ring is twisted with respect to the mean plane of quinoline moiety at 65.24 (4)°. In the crystal, mol-ecules are linked by weak C-H⋯O and C-H⋯N hydrogen bonds, forming the three-dimensional supra-molecular packing. π-π stacking between the quinoline ring systems of neighbouring mol-ecules is also observed, the centroid-to-centroid distance being 3.6169 (6) Å. Hirshfeld surface (HS) analyses were performed.
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Affiliation(s)
- Rawia Imane Bahoussi
- Laboratory of Technology and Solid Properties (LTPS), Abdelhamid Ibn Badis University, BP 227 Mostaganem 27000, Algeria
| | - Ahmed Djafri
- Laboratory of Technology and Solid Properties (LTPS), Abdelhamid Ibn Badis University, BP 227 Mostaganem 27000, Algeria
- Centre de Recherche Scientifique et Technique en Analyses, Physico-chimiques (CRAPC), BP 384-Bou-Ismail-RP 42004, Tipaza, Algeria
| | - Abdelkader Chouaih
- Laboratory of Technology and Solid Properties (LTPS), Abdelhamid Ibn Badis University, BP 227 Mostaganem 27000, Algeria
| | - Ayada Djafri
- Laboratory of Applied Organic Synthesis(LSOA), Department of Chemistry, Faculty of Sciences, University of Oran 1 – Ahmed Ben Bella, 31000 Oran, Algeria
| | - Fodil Hamzaoui
- Laboratory of Technology and Solid Properties (LTPS), Abdelhamid Ibn Badis University, BP 227 Mostaganem 27000, Algeria
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Safyanova IS, Ohui KA, Omelchenko IV. Crystal structure of bis-(μ- N-hy-droxy-picolin-amid-ato)bis-[bis-( N-hy-droxy-picolinamide)-sodium]. Acta Crystallogr E Crystallogr Commun 2017; 73:24-27. [PMID: 28083127 PMCID: PMC5209763 DOI: 10.1107/s2056989016019095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 11/30/2016] [Indexed: 11/23/2022]
Abstract
The title compound, [Na2(C6H5N2O2)2(C6H6N2O2)4], is a centrosymmetric coordination dimer based on the sodium(I) salt of N-hy-droxy-picolinamide. The mol-ecule has an {Na2O6(μ-O)2} core with two bridging carbonyl O atoms and two hydroxamate O atoms of two mono-deprotonated residues of N-hy-droxy-picolinamide, while two neutral N-hy-droxy-picolinamide mol-ecules are coordinated in a monodentate manner to each sodium ion via the carbonyl O atoms [the Na-O distances range from 2.3044 (2) to 2.3716 (2) Å]. The penta-coordinated sodium ion exhibits a distorted trigonal-pyramidal coordination polyhedron. In the crystal, the coordination dimers are linked into chains along the c axis via N-H⋯O and N-H⋯N hydrogen bonds; the chains are linked into a two-dimensional framework parallel to (100) via weak C-H⋯O and π-π stacking inter-actions.
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Affiliation(s)
- Inna S. Safyanova
- Department of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska Street 64, 01601 Kiev, Ukraine
| | - Kateryna A. Ohui
- Department of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska Street 64, 01601 Kiev, Ukraine
| | - Irina V. Omelchenko
- SSI "Institute for Single Crystals", National Academy of Sciences of Ukraine, Nauki ave. 60, Kharkiv, 61001, Ukraine
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50
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Aubert E, Doudouh A, Peluso P, Mamane V. Channels with ordered water and bipyridine mol-ecules in the porous coordination polymer {[Cu(SiF 6)(C 10H 8N 2) 2]·2C 10N 2H 8·5H 2O} n. Acta Crystallogr E Crystallogr Commun 2016; 72:1654-1658. [PMID: 27840730 PMCID: PMC5095855 DOI: 10.1107/s2056989016016686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 10/18/2016] [Indexed: 11/16/2022]
Abstract
The structure of a [Cu(SiF6)(C10H8N2)2]n coordination polymer with ordered 4,4′-bipyridine and water molecule channels is described. The coordination polymer {[Cu(SiF6)(C10H8N2)2]·2C10H8N2·5H2O}n, systematic name: poly[[bis(μ2-4,4′-bipyridine)(μ2-hexafluoridosilicato)copper(II)] 4,4′-bipyridine disolvate pentahydrate], contains pores which are filled with water and 4,4′-bipyridine molecules. As a result of the presence of these ordered species, the framework changes its symmetry from P4/mmm to P21/c. The 4,4′-bipyridine guest molecules form chains inside the 6.5 × 6.9 Å pores parallel to [100] in which the molecules interact through π–π stacking. Ordered water molecules form infinite hydrogen-bonded chains inside a second pore system (1.6 × 5.3 Å free aperture) perpendicular to the 4,4′-bipyridine channels.
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Affiliation(s)
- Emmanuel Aubert
- Cristallographie, Résonance Magnétique et Modélisations (CRM2), UMR CNRS, 7036, Université de Lorraine, BP 70239, Bd des Aiguillettes, 54506, Vandoeuvre-les-Nancy, France
| | - Abdelatif Doudouh
- Cristallographie, Résonance Magnétique et Modélisations (CRM2), UMR CNRS, 7036, Université de Lorraine, BP 70239, Bd des Aiguillettes, 54506, Vandoeuvre-les-Nancy, France
| | - Paola Peluso
- Istituto di Chimica Biomolecolare ICB CNR - Sede Secondaria di Sassari, Traversa La Crucca 3, Regione Baldinca, I-07100 Li Punti - Sassari, Italy
| | - Victor Mamane
- Institut de Chimie de Strasbourg, UMR 7177, Equipe LASYROC, 1 rue Blaise Pascal, BP 296 R8, 67008 Strasbourg Cedex, France
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