101
|
Saini J, Viswanathan KS. Discerning Near-Isoergic Isomers. A Matrix Isolation Infrared and ab Initio Study of the Propargyl Alcohol Dimers. J Phys Chem A 2017; 121:1448-1459. [DOI: 10.1021/acs.jpca.6b12702] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jyoti Saini
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Punjab 140306, India
| | - K. S. Viswanathan
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Punjab 140306, India
| |
Collapse
|
102
|
Rahnamaye Aliabad HA, Chahkandi M. Comprehensive SPHYB and B3LYP-DFT Studies of Two Types of Ferrocene. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201600423] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Mohammad Chahkandi
- Department of Chemistry; Hakim Sabzevari University; 96179-76487 Sabzevar Iran
| |
Collapse
|
103
|
Affiliation(s)
- F. Ghanavati
- Department of Chemistry, Yasouj University, Yasouj, Iran
| | - S. M. Azami
- Department of Chemistry, Yasouj University, Yasouj, Iran
| |
Collapse
|
104
|
Egorova KS, Gordeev EG, Ananikov VP. Biological Activity of Ionic Liquids and Their Application in Pharmaceutics and Medicine. Chem Rev 2017; 117:7132-7189. [PMID: 28125212 DOI: 10.1021/acs.chemrev.6b00562] [Citation(s) in RCA: 890] [Impact Index Per Article: 127.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Ionic liquids are remarkable chemical compounds, which find applications in many areas of modern science. Because of their highly tunable nature and exceptional properties, ionic liquids have become essential players in the fields of synthesis and catalysis, extraction, electrochemistry, analytics, biotechnology, etc. Apart from physical and chemical features of ionic liquids, their high biological activity has been attracting significant attention from biochemists, ecologists, and medical scientists. This Review is dedicated to biological activities of ionic liquids, with a special emphasis on their potential employment in pharmaceutics and medicine. The accumulated data on the biological activity of ionic liquids, including their antimicrobial and cytotoxic properties, are discussed in view of possible applications in drug synthesis and drug delivery systems. Dedicated attention is given to a novel active pharmaceutical ingredient-ionic liquid (API-IL) concept, which suggests using traditional drugs in the form of ionic liquid species. The main aim of this Review is to attract a broad audience of chemical, biological, and medical scientists to study advantages of ionic liquid pharmaceutics. Overall, the discussed data highlight the importance of the research direction defined as "Ioliomics", studies of ions in liquids in modern chemistry, biology, and medicine.
Collapse
Affiliation(s)
- Ksenia S Egorova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prospect 47, Moscow 119991, Russia
| | - Evgeniy G Gordeev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prospect 47, Moscow 119991, Russia
| | - Valentine P Ananikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prospect 47, Moscow 119991, Russia.,Department of Chemistry, Saint Petersburg State University , Stary Petergof 198504, Russia
| |
Collapse
|
105
|
Tognetti V, Bouzbouz S, Joubert L. A theoretical study of the diastereoselective allylation of aldehydes with new chiral allylsilanes. J Mol Model 2016; 23:5. [DOI: 10.1007/s00894-016-3173-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 11/16/2016] [Indexed: 11/24/2022]
|
106
|
Yuan E, Wang L, Zhang X, Feng R, Wu C, Li G. Density Functional Theory Analysis of Anthraquinone Derivative Hydrogenation over Palladium Catalyst. Chemphyschem 2016; 17:3974-3984. [PMID: 27662599 DOI: 10.1002/cphc.201600874] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Indexed: 11/08/2022]
Abstract
A density functional theory (DFT) analysis was conducted on the hydrogenation of 2-alkyl-anthraquinone (AQ), including 2-ethyl-9,10-anthraquinone (eAQ) and 2-ethyl-5,6,7,8-tetrahydro-9,10-anthraquinone (H4 eAQ), to the corresponding anthrahydroquinone (AQH2 ) over a Pd6 H2 cluster. Hydrogenation of H4 eAQ is suggested to be more favorable than that of eAQ owing to a higher adsorption energy of the reactant (H4 eAQ), lower barrier of activation energy, and smaller desorption energy of the target product (2-ethyl-5,6,7,8-tetrahydro-9,10-anthrahydroquinone, H4 eAQH2 ). For the most probable reaction routes, the energy barrier of the second hydrogenation step of AQ is circa 8 kcal mol-1 higher than that of the first step. Electron transfer of these processes were systematically investigated. Facile electron transfer from Pd6 H2 cluster to AQ/AQH intermediate favors the hydrogenation of C=O. The electron delocalization over the boundary aromatic ring of AQ/AQH intermediate and the electron-withdrawing effect of C=O are responsible for the electron transfer. In addition, a pathway of the electron transfer is proposed for the adsorption and subsequent hydrogenation of AQ on the surface of Pd6 H2 cluster. The electron transfers from the abstracted H atom (reactive H) to a neighbor Pd atom (PdH ), and finally goes to the carbonyl group through the C4 atom of AQ aromatic ring (C4 ).
Collapse
Affiliation(s)
- Enxian Yuan
- Key Laboratory for Green Chemica,l Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Li Wang
- Key Laboratory for Green Chemica,l Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.,Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| | - Xiangwen Zhang
- Key Laboratory for Green Chemica,l Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.,Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| | - Ren Feng
- Key Laboratory for Green Chemica,l Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Chan Wu
- Key Laboratory for Green Chemica,l Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Guozhu Li
- Key Laboratory for Green Chemica,l Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.,Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| |
Collapse
|
107
|
Wang J, Mo L, Li X, Geng Z, Zeng Y. The protonated 2-halogenated imidazolium cation as the noncovalent interaction donor: the σ-hole and π-hole interactions. J Mol Model 2016; 22:299. [PMID: 27900582 DOI: 10.1007/s00894-016-3169-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 11/15/2016] [Indexed: 01/15/2023]
Abstract
The σ-hole and π-hole of the protonated 2-halogenated imidazolium cation (XC3H4N2+; X = F, Cl, Br, I) were investigated and analyzed. The monomers of (CH3)3SiY(Y=F, Cl, Br, I), considered as the Lewis base, were combined with the σ-hole and π-hole of XC3H4N2+ to form the σ-hole and π-hole interactions in the bimolecular complexes (CH3)3SiY · · · XC3H4N2+ and (CH3)3SiY · · · C3(X)H4N2+(X/Y=F, Cl, Br, I), respectively. For both the σ-hole and π-hole interactions, the equilibrium geometries of complexes show regular changes according to the sequence of heavy sequence of the noncovalent interaction acceptors and donors. The electrostatic energy is the main contribution in the formation of both kinds of interactions, it has linear relations with the V S,max values of σ-hole and the V' S,max values of π-hole. Both the σ-hole and π-hole interactions belong to the closed-shell and noncovalent interactions. The π-hole interactions are stronger than the σ-hole interactions. For the π-hole interactions, the contribution percents of the dispersion energies are somewhat greater than those of the σ-hole interactions, while it is contrary for the polarization energy. Graphical Abstract The protonated 2-halogenated imidazolium cation as the noncovalent interaction donor: the σ-hole and π-hole interactionsᅟ.
Collapse
Affiliation(s)
- Jingjing Wang
- Institute of Computational Quantum Chemistry, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China
| | - Lixin Mo
- Institute of Computational Quantum Chemistry, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China
| | - Xiaoyan Li
- Institute of Computational Quantum Chemistry, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China
| | - Zongke Geng
- Institute of Computational Quantum Chemistry, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China.
| | - Yanli Zeng
- Institute of Computational Quantum Chemistry, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China.
| |
Collapse
|
108
|
Carbamohydrazonothioate derivative—experimental and theoretical explorations of the crystal and molecular structure. Struct Chem 2016. [DOI: 10.1007/s11224-016-0874-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
109
|
Zhang J, Liu J. DFT studies on structural properties and electron density topologies of the iron selenides Fe m Se n (1 ≤ m, n ≤ 4). RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2016. [DOI: 10.1134/s0036024416130094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
110
|
Affiliation(s)
- Bo Lu
- College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 P. R. China
| | - Xueying Zhang
- College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 P. R. China
| | - Lingpeng Meng
- College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 P. R. China
| | - Yanli Zeng
- College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 P. R. China
| |
Collapse
|
111
|
Davie SJ, Di Pasquale N, Popelier PLA. Incorporation of local structure into kriging models for the prediction of atomistic properties in the water decamer. J Comput Chem 2016; 37:2409-22. [PMID: 27535711 PMCID: PMC5031213 DOI: 10.1002/jcc.24465] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 06/06/2016] [Accepted: 07/07/2016] [Indexed: 01/17/2023]
Abstract
Machine learning algorithms have been demonstrated to predict atomistic properties approaching the accuracy of quantum chemical calculations at significantly less computational cost. Difficulties arise, however, when attempting to apply these techniques to large systems, or systems possessing excessive conformational freedom. In this article, the machine learning method kriging is applied to predict both the intra-atomic and interatomic energies, as well as the electrostatic multipole moments, of the atoms of a water molecule at the center of a 10 water molecule (decamer) cluster. Unlike previous work, where the properties of small water clusters were predicted using a molecular local frame, and where training set inputs (features) were based on atomic index, a variety of feature definitions and coordinate frames are considered here to increase prediction accuracy. It is shown that, for a water molecule at the center of a decamer, no single method of defining features or coordinate schemes is optimal for every property. However, explicitly accounting for the structure of the first solvation shell in the definition of the features of the kriging training set, and centring the coordinate frame on the atom-of-interest will, in general, return better predictions than models that apply the standard methods of feature definition, or a molecular coordinate frame. © 2016 The Authors. Journal of Computational Chemistry Published by Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Stuart J Davie
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, Great Britain and School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, Great Britain
| | - Nicodemo Di Pasquale
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, Great Britain and School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, Great Britain
| | - Paul L A Popelier
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, Great Britain and School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, Great Britain.
| |
Collapse
|
112
|
Masoodi HR, Bagheri S, Ranjbar M. Theoretical study of cooperativity between hydrogen bond‒hydrogen bond, halogen bond‒halogen bond and hydrogen bond‒halogen bond in ternary FX…diazine…XF (X = H and Cl) complexes. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1236992] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Hamid Reza Masoodi
- Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Sotoodeh Bagheri
- Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Mahdiyeh Ranjbar
- Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| |
Collapse
|
113
|
|
114
|
The influence of substituents on cooperativity between CH···π and N···H hydrogen bonds in a T-shaped configuration: X-benzene⊥(FH···pyrazine···HF) complexes as a working model. Struct Chem 2016. [DOI: 10.1007/s11224-016-0777-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
115
|
Lomas JS, Joubert L, Maurel F. Association of symmetrical alkane diols with pyridine: DFT/GIAO calculation of 1 H NMR chemical shifts. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:805-814. [PMID: 27247256 DOI: 10.1002/mrc.4457] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/04/2016] [Accepted: 05/05/2016] [Indexed: 06/05/2023]
Abstract
Proton nuclear magnetic resonance (NMR) shifts of the free diol and of its 1 : 1 and 1 : 2 hydrogen-bonded complexes with pyridine have been computed for five symmetrical alkane diols on the basis of density functional theory, by applying the gauge-including atomic orbital method to geometry-optimized conformers. For certain conformers, intramolecular OH···OH interactions, evidenced by high NMR OH proton shifts, are further enhanced on going from the free diol to the corresponding 1 : 1 diol/pyridine complex. This is confirmed by atoms-in-molecules and non-covalent interaction plots. The computed OH and CH proton shifts for the diol and the two complexes correlate well with values obtained by analysing data from the NMR titration of the diols in benzene against pyridine. Shift values for the diols in neat pyridine are calculated by weighting the shifts of the various protons in the three forms (free diol, 1 : 1 and 1 : 2 diol/pyridine complexes) according to the experimentally determined association constants. The results are in good agreement with those observed, and after empirical scaling, the root mean square difference is 0.18 ppm. Copyright © 2016 John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- John S Lomas
- ITODYS (UMR 7086), Univ Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Laurent Joubert
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, France
| | - François Maurel
- ITODYS (UMR 7086), Univ Paris Diderot, Sorbonne Paris Cité, Paris, France
| |
Collapse
|
116
|
Groß L, Herrmann C. GenLocDip: A Generalized Program to Calculate and Visualize Local Electric Dipole Moments. J Comput Chem 2016; 37:2324-34. [PMID: 27416879 DOI: 10.1002/jcc.24420] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 04/30/2016] [Accepted: 05/06/2016] [Indexed: 11/09/2022]
Abstract
Local dipole moments (i.e., dipole moments of atomic or molecular subsystems) are essential for understanding various phenomena in nanoscience, such as solvent effects on the conductance of single molecules in break junctions or the interaction between the tip and the adsorbate in atomic force microscopy. We introduce GenLocDip, a program for calculating and visualizing local dipole moments of molecular subsystems. GenLocDip currently uses the Atoms-In-Molecules (AIM) partitioning scheme and is interfaced to various AIM programs. This enables postprocessing of a variety of electronic structure output formats including cube and wavefunction files, and, in general, output from any other code capable of writing the electron density on a three-dimensional grid. It uses a modified version of Bader's and Laidig's approach for achieving origin-independence of local dipoles by referring to internal reference points which can (but do not need to be) bond critical points (BCPs). Furthermore, the code allows the export of critical points and local dipole moments into a POVray readable input format. It is particularly designed for fragments of large systems, for which no BCPs have been calculated for computational efficiency reasons, because large interfragment distances prevent their identification, or because a local partitioning scheme different from AIM was used. The program requires only minimal user input and is written in the Fortran90 programming language. To demonstrate the capabilities of the program, examples are given for covalently and non-covalently bound systems, in particular molecular adsorbates. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Lynn Groß
- Department of Chemistry, Institute for Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, Hamburg, 20146, Germany
| | - Carmen Herrmann
- Department of Chemistry, Institute for Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, Hamburg, 20146, Germany
| |
Collapse
|
117
|
KARIR GINNY, FATIMA MARIYAM, VISWANATHAN KS. The elusive ≡C-H⋯O complex in the hydrogen bonded systems of Phenylacetylene: A Matrix Isolation Infrared and Ab Initio Study. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1166-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
118
|
Davie SJ, Di Pasquale N, Popelier PLA. Kriging atomic properties with a variable number of inputs. J Chem Phys 2016; 145:104104. [DOI: 10.1063/1.4962197] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Stuart J. Davie
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, United Kingdom and School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Nicodemo Di Pasquale
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, United Kingdom and School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Paul L. A. Popelier
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, United Kingdom and School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| |
Collapse
|
119
|
Roca RA, Gouveia AF, Lemos PS, Gracia L, Andrés J, Longo E. Formation of Ag Nanoparticles on β-Ag2WO4 through Electron Beam Irradiation: A Synergetic Computational and Experimental Study. Inorg Chem 2016; 55:8661-71. [DOI: 10.1021/acs.inorgchem.6b01215] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roman A. Roca
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905 São Carlos-SP, Brazil
| | - Amanda F. Gouveia
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905 São Carlos-SP, Brazil
| | - Pablo S. Lemos
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905 São Carlos-SP, Brazil
| | - Lourdes Gracia
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló 12071, Spain
| | - Juan Andrés
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló 12071, Spain
| | - Elson Longo
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905 São Carlos-SP, Brazil
| |
Collapse
|
120
|
Groß L, Herrmann C. Local electric dipole moments: A generalized approach. J Comput Chem 2016; 37:2260-5. [PMID: 27520590 DOI: 10.1002/jcc.24440] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 05/26/2016] [Accepted: 06/03/2016] [Indexed: 11/10/2022]
Abstract
We present an approach for calculating local electric dipole moments for fragments of molecular or supramolecular systems. This is important for understanding chemical gating and solvent effects in nanoelectronics, atomic force microscopy, and intensities in infrared spectroscopy. Owing to the nonzero partial charge of most fragments, "naively" defined local dipole moments are origin-dependent. Inspired by previous work based on Bader's atoms-in-molecules (AIM) partitioning, we derive a definition of fragment dipole moments which achieves origin-independence by relying on internal reference points. Instead of bond critical points (BCPs) as in existing approaches, we use as few reference points as possible, which are located between the fragment and the remainder(s) of the system and may be chosen based on chemical intuition. This allows our approach to be used with AIM implementations that circumvent the calculation of critical points for reasons of computational efficiency, for cases where no BCPs are found due to large interfragment distances, and with local partitioning schemes other than AIM which do not provide BCPs. It is applicable to both covalently and noncovalently bound systems. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Lynn Groß
- Department of Chemistry, Institute for Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, Hamburg, 20146, Germany
| | - Carmen Herrmann
- Department of Chemistry, Institute for Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, Hamburg, 20146, Germany
| |
Collapse
|
121
|
Alkorta I, Elguero J, Del Bene JE. Boron as an Electron-Pair Donor for B⋅⋅⋅Cl Halogen Bonds. Chemphyschem 2016; 17:3112-3119. [PMID: 27412758 DOI: 10.1002/cphc.201600435] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Indexed: 11/10/2022]
Abstract
MP2/aug'-cc-pVTZ calculations were performed to investigate boron as an electron-pair donor in halogen-bonded complexes (CO)2 (HB):ClX and (N2 )2 (HB):ClX, for X=F, Cl, OH, NC, CN, CCH, CH3 , and H. Equilibrium halogen-bonded complexes with boron as the electron-pair donor are found on all of the potential surfaces, except for (CO)2 (HB):ClCH3 and (N2 )2 (HB):ClF. The majority of these complexes are stabilized by traditional halogen bonds, except for (CO)2 (HB):ClF, (CO)2 (HB):ClCl, (N2 )2 (HB):ClCl, and (N2 )2 (HB):ClOH, which are stabilized by chlorine-shared halogen bonds. These complexes have increased binding energies and shorter B-Cl distances. Charge transfer stabilizes all complexes and occurs from the B lone pair to the σ* Cl-A orbital of ClX, in which A is the atom of X directly bonded to Cl. A second reduced charge-transfer interaction occurs in (CO)2 (HB):ClX complexes from the Cl lone pair to the π* C≡O orbitals. Equation-of-motion coupled cluster singles and doubles (EOM-CCSD) spin-spin coupling constants, 1x J(B-Cl), across the halogen bonds are also indicative of the changing nature of this bond. 1x J(B-Cl) values for both series of complexes are positive at long distances, increase as the distance decreases, and then decrease as the halogen bonds change from traditional to chlorine-shared bonds, and begin to approach the values for the covalent bonds in the corresponding ions [(CO)2 (HB)-Cl]+ and [(N2 )2 (HB)-Cl]+ . Changes in 11 B chemical shieldings upon complexation correlate with changes in the charges on B.
Collapse
Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica (IQM-CSIC), Juan de la Cierva, 3, E-28006, Madrid, Spain.
| | - José Elguero
- Instituto de Química Médica (IQM-CSIC), Juan de la Cierva, 3, E-28006, Madrid, Spain
| | - Janet E Del Bene
- Department of Chemistry, Youngstown State University, Youngstown, OH, 44555, USA.
| |
Collapse
|
122
|
The role of OH…O and CH…O hydrogen bonds and H…H interactions in ethanol/methanol–water heterohexamers. J Mol Model 2016; 22:181. [DOI: 10.1007/s00894-016-3050-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 06/21/2016] [Indexed: 10/21/2022]
|
123
|
Bayat M, Amraie F, Salehzadeh S. Theoretical studies on structure, formation and nature of bond in a Disila-, Digerma- and distannacyclobutene ring. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2016. [DOI: 10.1142/s0219633616500322] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A theoretical study on the structure, formation and nature of E–E and C–E bonds (E[Formula: see text][Formula: see text][Formula: see text]Si, Ge, Sn) in catenated compounds of the group 14 elements including disila-, digerma- and distannacyclobutene ring formed from the reaction of 1-thiacyclohept-4-yne and E(NR)2SiR2 molecules [E[Formula: see text][Formula: see text][Formula: see text]Si, Ge, Sn, R[Formula: see text][Formula: see text][Formula: see text]t-Bu, H, F, Cl, Br] in 1:2 mole ratio has been investigated at the M06/def2-TZVPP level of theory. The results showed that the formation energy of the products of the reaction above with Si(NBr)2SiBr2 and Sn(NF)2SiF2 reactants has greatest and the smallest value, respectively. In agreement with the values of formation energies, both the calculated Wiberg bond indices (WBI) for E—E and C—E bonds and [Formula: see text](BCP) of E—E bond in the products of two above reactants have largest and smallest values, respectively. The nature of E—E bond in the products was also studied with atoms in molecules (AIM) and natural bond orbital (NBO) analyses. The data confirmed that the E—E bond is partly covalent. In addition, the nature of C—E bond was investigated with energy decomposition analysis (EDA) and it was shown that the covalent contribution is in the range 48–53% depending on the types of E atom and corresponding substituents.
Collapse
Affiliation(s)
- Mehdi Bayat
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Fatemeh Amraie
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | | |
Collapse
|
124
|
Lang T, Zhang X, Meng L, Zeng Y. Mutual enhancing effects of the σ-hole interactions and halogen/hydrogen-bonded interactions in the iodine-ylide containing complexes. Struct Chem 2016. [DOI: 10.1007/s11224-015-0676-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
125
|
|
126
|
|
127
|
|
128
|
Bertocco P, Bolli C, Correia Bicho BA, Jenne C, Erken B, Laitinen RS, Seeger HA, Takaluoma TT. Theoretical and Synthetic Study on the Existence, Structures, and Bonding of the Halide-Bridged [B2X7](-) (X = F, Cl, Br, I) Anions. Inorg Chem 2016; 55:3599-604. [PMID: 26977788 DOI: 10.1021/acs.inorgchem.6b00118] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
While hydrogen bridging is very common in boron chemistry, halogen bridging is rather rare. The simplest halogen-bridged boron compounds are the [B2X7](-) anions (X = F, Cl, Br, I), of which only [B2F7](-) has been reported to exist experimentally. In this paper a detailed theoretical and synthetic study on the [B2X7](-) anions is presented. The structures of [B2X7](-) anions have been calculated at the MP2/def2-TZVPP level of theory, and their local minima have been shown to be of C2 symmetry in all cases. The bonding situation varies significantly between the different anions. While in [B2F7](-) the bonding is mainly governed by electrostatics, the charge is almost equally distributed over all atoms in [B2I7](-) and additional weak iodine···iodine interactions are observed. This was shown by an atoms in molecules (AIM) analysis. The thermodynamic stability of the [B2X7](-) anions was estimated in all phases (gas, solution, and solid state) based on quantum-chemical calculations and estimations of the lattice enthalpies using a volume-based approach. In the gas phase the formation of [B2X7](-) anions from [BX4](-) and BX3 is favored in accord with the high Lewis acidity of the BX3 molecules. In solution and in the solid state only [B2F7](-) is stable against dissociation. The other three anions are borderline cases, which might be detectable under favorable conditions. However, experimental attempts to identify [B2X7](-) (X = Cl, Br, I) anions in solution by (11)B NMR spectroscopy and to prepare stable [PNP][B2X7] salts failed.
Collapse
Affiliation(s)
- Philipp Bertocco
- Fakultät für Mathematik und Naturwissenschaften, Anorganische Chemie, Bergische Universität Wuppertal , 42119 Wuppertal, Germany
| | - Christoph Bolli
- Fakultät für Mathematik und Naturwissenschaften, Anorganische Chemie, Bergische Universität Wuppertal , 42119 Wuppertal, Germany
| | - Bruno A Correia Bicho
- Fakultät für Mathematik und Naturwissenschaften, Anorganische Chemie, Bergische Universität Wuppertal , 42119 Wuppertal, Germany
| | - Carsten Jenne
- Fakultät für Mathematik und Naturwissenschaften, Anorganische Chemie, Bergische Universität Wuppertal , 42119 Wuppertal, Germany
| | - Berrin Erken
- Fakultät für Mathematik und Naturwissenschaften, Anorganische Chemie, Bergische Universität Wuppertal , 42119 Wuppertal, Germany
| | - Risto S Laitinen
- Laboratory of Inorganic Chemistry, University of Oulu , P.O. Box 3000, 90014 Oulu, Finland
| | - Helene A Seeger
- Fakultät für Mathematik und Naturwissenschaften, Anorganische Chemie, Bergische Universität Wuppertal , 42119 Wuppertal, Germany
| | - Teemu T Takaluoma
- Fakultät für Mathematik und Naturwissenschaften, Anorganische Chemie, Bergische Universität Wuppertal , 42119 Wuppertal, Germany.,Laboratory of Inorganic Chemistry, University of Oulu , P.O. Box 3000, 90014 Oulu, Finland
| |
Collapse
|
129
|
Hermann G, Pohl V, Tremblay JC, Paulus B, Hege HC, Schild A. ORBKIT: A modular python toolbox for cross-platform postprocessing of quantum chemical wavefunction data. J Comput Chem 2016; 37:1511-20. [DOI: 10.1002/jcc.24358] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/16/2016] [Accepted: 02/22/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Gunter Hermann
- Institut für Chemie und Biochemie, Freie Universität Berlin; Takustraße 3 Berlin 14195 Germany
| | - Vincent Pohl
- Institut für Chemie und Biochemie, Freie Universität Berlin; Takustraße 3 Berlin 14195 Germany
| | | | - Beate Paulus
- Institut für Chemie und Biochemie, Freie Universität Berlin; Takustraße 3 Berlin 14195 Germany
| | - Hans-Christian Hege
- Department of Visual Data Analysis; Zuse Institute Berlin; Takustraße 7 Berlin 14195 Germany
| | - Axel Schild
- Max-Planck-Institut für Mikrostrukturphysik; Weinberg 2 Halle 06120 Germany
| |
Collapse
|
130
|
Di Pasquale N, Davie SJ, Popelier PLA. Optimization Algorithms in Optimal Predictions of Atomistic Properties by Kriging. J Chem Theory Comput 2016; 12:1499-513. [DOI: 10.1021/acs.jctc.5b00936] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicodemo Di Pasquale
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, Great Britain
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, Great Britain
| | - Stuart J. Davie
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, Great Britain
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, Great Britain
| | - Paul L. A. Popelier
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, Great Britain
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, Great Britain
| |
Collapse
|
131
|
Gao L, Zeng Y, Zhang X, Meng L. Comparative studies on group III σ-hole and π-hole interactions. J Comput Chem 2016; 37:1321-7. [PMID: 26949204 DOI: 10.1002/jcc.24347] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 01/02/2016] [Accepted: 02/07/2016] [Indexed: 12/24/2022]
Abstract
The σ-hole of M2 H6 (M = Al, Ga, In) and π-hole of MH3 (M = Al, Ga, In) were discovered and analyzed, the bimolecular complexes M2 H6 ···NH3 and MH3 ···N2 P2 F4 (M = Al, Ga, In) were constructed to carry out comparative studies on the group III σ-hole interactions and π-hole interactions. The two types of interactions are all partial-covalent interactions; the π-hole interactions are stronger than σ-hole interactions. The electrostatic energy is the largest contribution for forming the σ-hole and π-hole interaction, the polarization energy is also an important factor to form the M···N interaction. The electrostatic energy contributions to the interaction energy of the σ-hole interactions are somewhat greater than those of the π-hole interactions. However, the polarization contributions for the π-hole interactions are somewhat greater than those for the σ-hole interactions.
Collapse
Affiliation(s)
- Lei Gao
- Institute of Computational Quantum Chemistry, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China
| | - Yanli Zeng
- Institute of Computational Quantum Chemistry, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China
| | - Xueying Zhang
- Institute of Computational Quantum Chemistry, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China
| | - Lingpeng Meng
- Institute of Computational Quantum Chemistry, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China
| |
Collapse
|
132
|
Electrostatic potentials and average electron densities of bioisosteres in methylsquarate and acetic acid. Future Med Chem 2016; 8:361-71. [DOI: 10.4155/fmc.16.2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: The bioisosterism in −CO2H and −C4HO3 is exploited using the quantum theory of atoms in molecules and molecular electrostatic potentials (ESP). Results & discussion: Bioisosteres in methylsquarate and acetic acid, in the neutral/anionic forms, have average electron densities that differ by less than 2% (i.e., ∼0.01 atomic units) while irrespective of the capping group. The topography of the ESP reveals similarities in the case of the neutral species but not in the anionic forms. Conclusion: The nonclassical bioisosteres in methylsquarate and acetic acid have average electron densities that are similar and relatively insensitive to the ionization state (neutral or anionic) or its studied capping group (H, CH3, Cl or phenyl). The ESP reveals similarities in the topography of neutral molecules.
Collapse
|
133
|
Osipova ES, Belkova NV, Epstein LM, Filippov OA, Kirkina VA, Titova EM, Rossin A, Peruzzini M, Shubina ES. Dihydrogen Bonding and Proton Transfer from MH and OH Acids to Group 10 Metal Hydrides [(tBuPCP)MH] [tBuPCP = κ3-2,6-(tBu2PCH2)2C6H3; M = Ni, Pd]. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
134
|
A topological analysis of the bonding in [M2(CO)10] and [M3(μ-H)3(CO)12] complexes (M = Mn, Tc, Re). Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1821-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
135
|
Difluorodiazirine (CF2N2): a quantum mechanical study of the electron density and of the electrostatic potential in the ground and excited electronic states. Theor Chem Acc 2016. [DOI: 10.1007/s00214-015-1803-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
136
|
Goli M, Shahbazian S. Muon-Substituted Malonaldehyde: Transforming a Transition State into a Stable Structure by Isotope Substitution. Chemistry 2016; 22:2525-31. [PMID: 26749489 DOI: 10.1002/chem.201504318] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Indexed: 12/25/2022]
Abstract
Isotope substitutions are usually conceived to play a marginal role on the structure and bonding pattern of molecules. However, a recent study [Angew. Chem. Int. Ed. 2014, 53, 13706-13709; Angew. Chem. 2014, 126, 13925-13929] further demonstrates that upon replacing a proton with a positively charged muon, as the lightest radioisotope of hydrogen, radical changes in the nature of the structure and bonding of certain species may take place. The present report is a primary attempt to introduce another example of structural transformation on the basis of the malonaldehyde system. Accordingly, upon replacing the proton between the two oxygen atoms of malonaldehyde with the positively charged muon a serious structural transformation is observed. By using the ab initio nuclear-electronic orbital non-Born-Oppenheimer procedure, the nuclear configuration of the muon-substituted species is derived. The resulting nuclear configuration is much more similar to the transition state of the proton transfer in malonaldehyde rather than to the stable configuration of malonaldehyde. The comparison of the "atoms in molecules" (AIM) structure of the muon-substituted malonaldehyde and the AIM structure of the stable and the transition-state configurations of malonaldehyde also unequivocally demonstrates substantial similarities of the muon-substituted malonaldehyde to the transition state.
Collapse
Affiliation(s)
- Mohammad Goli
- Faculty of Chemistry, Shahid Beheshti University, G. C., Evin, P.O. Box 19395-4716, Tehran, 19839, Iran), Fax
| | - Shant Shahbazian
- Faculty of Chemistry, Shahid Beheshti University, G. C., Evin, P.O. Box 19395-4716, Tehran, 19839, Iran), Fax.
| |
Collapse
|
137
|
Yahia-Ouahmed M, Tognetti V, Joubert L. Intramolecular halogen bonding: an interacting quantum atoms study. Theor Chem Acc 2016. [DOI: 10.1007/s00214-015-1796-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
138
|
Sovago I, Gutmann MJ, Senn HM, Thomas LH, Wilson CC, Farrugia LJ. Electron density, disorder and polymorphism: high-resolution diffraction studies of the highly polymorphic neuralgic drug carbamazepine. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2016; 72:39-50. [PMID: 26830795 DOI: 10.1107/s2052520615019538] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 10/15/2015] [Indexed: 06/05/2023]
Abstract
Analysis of neutron and high-resolution X-ray diffraction data on form (III) of carbamazepine at 100 K using the atoms in molecules (AIM) topological approach afforded excellent agreement between the experimental results and theoretical densities from the optimized gas-phase structure and from multipole modelling of static theoretical structure factors. The charge density analysis provides experimental confirmation of the partially localized π-bonding suggested by the conventional structural formula, but the evidence for any significant C-N π bonding is not strong. Hirshfeld atom refinement (HAR) gives H atom positional and anisotropic displacement parameters that agree very well with the neutron parameters. X-ray and neutron diffraction data on the dihydrate of carbemazepine strongly indicate a disordered orthorhombic crystal structure in the space group Cmca, rather than a monoclinic crystal structure in space group P2(1)/c. This disorder in the dihydrate structure has implications for both experimental and theoretical studies of polymorphism.
Collapse
Affiliation(s)
- Ioana Sovago
- WESTChem School of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland
| | - Matthias J Gutmann
- ISIS Facility, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Chilton, Didcot, Oxfordshire OX11 0QX, England
| | - Hans Martin Senn
- WESTChem School of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland
| | - Lynne H Thomas
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, England
| | - Chick C Wilson
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, England
| | - Louis J Farrugia
- WESTChem School of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland
| |
Collapse
|
139
|
Harrison JA, Nielson AJ, Sajjad MA, Saunders GC, Schwerdtfeger P. Steric and Electronic Manipulation of the Anagostic Interaction in 1-Tetralone Oxime and Imine Complexes of Rhodium(I). Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501122] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
140
|
Patrikeev L, Joubert L, Tognetti V. Atomic decomposition of Kohn–Sham molecular energies: the kinetic energy component. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1113314] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Leonid Patrikeev
- Normandie Université COBRA, UMR 6014 et FR 3038, Université de Rouen, INSA Rouen, CNRS, Mont St Aignan, Cedex, France
| | - Laurent Joubert
- Normandie Université COBRA, UMR 6014 et FR 3038, Université de Rouen, INSA Rouen, CNRS, Mont St Aignan, Cedex, France
| | - Vincent Tognetti
- Normandie Université COBRA, UMR 6014 et FR 3038, Université de Rouen, INSA Rouen, CNRS, Mont St Aignan, Cedex, France
| |
Collapse
|
141
|
Matta CF, Sadjadi SA, Braden DA, Frenking G. The barrier to the methyl rotation inCis-2-butene and its isomerization energy toTrans-2-butene, revisited. J Comput Chem 2015; 37:143-54. [DOI: 10.1002/jcc.24223] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 08/02/2015] [Accepted: 09/06/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Chérif F. Matta
- Department of Chemistry and Physics; Mount Saint Vincent University; Halifax Nova Scotia B3M 2J6 Canada
- Department of Chemistry; Dalhousie University; Halifax Nova Scotia B3H 4J3 Canada
- Department of Chemistry; Saint Mary's University; Halifax Nova Scotia B3H 3C3 Canada
| | - Seyed Abdolreza Sadjadi
- Department of Physics, Faculty of Science, Space Astronomy Laboratory; The University of Hong Kong; Pokfulam Road Hong Kong SAR China
| | | | - Gernot Frenking
- Philipps-Universität Marburg Hans-Meerweinstr.; Marburg 4 D-35032 Germany
- Donostia International Physics Center (DIPC); P.K. 1072, 20080 Donostia Euskadi Spain
| |
Collapse
|
142
|
Wang J, Su D, Wang D, Ding S, Huang C, Huang H, Hu X, Wang Z, Li S. Selective Extraction of Americium(III) over Europium(III) with the Pyridylpyrazole Based Tetradentate Ligands: Experimental and Theoretical Study. Inorg Chem 2015; 54:10648-55. [DOI: 10.1021/acs.inorgchem.5b01452] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jieru Wang
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Dongping Su
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Dongqi Wang
- Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Songdong Ding
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Chao Huang
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Huang Huang
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Xiaoyang Hu
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Zhipeng Wang
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Shimeng Li
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| |
Collapse
|
143
|
Theoretical studies on structures, stability and nature of C → E (E = Si, Sn) bond in some derivatives of bitriazole-base NHC complexes with five-membered chelate rings. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0748-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
144
|
Hatami M, Bayat M, Keypour H, Salehzadeh S. Ab initio and DFT studies on the structures, binding energies and nature of bonds in X2Y3 metal clusters (X+ = Li+, Na+ and K+; ${\rm Y}_{3}^{2-} = {\rm Zn}_{3}^{2-}, {\rm Cd}_{3}^{2-}$ and ${\rm Hg}_{3}^{2-}$). JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2015. [DOI: 10.1142/s0219633615500431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A comprehensive theoretical study on the structure and stability of linear and triangular isomers of anionic clusters of zinc, cadmium and mercury [Formula: see text] and their binding with one and two alkali metal cations ( X + = Li +, Na +, K +) has been investigated at the density functional (BP86 and B3LYP) and ab initio (MP2, MP4 and coupled cluster single and double (CCSD)) methods. The results showed that in all cases, the triangular geometry with D3h symmetry is more stable than linear one. The calculated values of interaction energies (IE) between [Formula: see text] anions and two X+ cations, Wiberg bond indices (WBI) and the electron densities at bond critical points (BCP), ρ(BCP), for Y–X bonds show that among all complexes investigated here at all levels of theory Zn 3 Li 2 and Hg 3 K 2 have the largest and the smallest values of IE, WBI and ρ(BCP), respectively. The natural charges of the atoms and WBI involved in the bonding as well as the global value of the charge transfer ΔQ from [Formula: see text] to X+ cation in X2Y3 clusters, evaluated through natural population analysis, confirmed that covalent contribution in Y–X bond formation increases from K + to Li +. Also the energy decomposition analyses (EDA) were used to detect the nature of interaction in the complexes. The results confirmed that the contribution of electrostatic interactions in present complexes is almost more than 70%.
Collapse
Affiliation(s)
- Masoud Hatami
- Hamedan University of Technology, Hamedan 65155, Iran
| | - Mehdi Bayat
- Department of Inorganic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Hassan Keypour
- Department of Inorganic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Sadegh Salehzadeh
- Department of Inorganic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| |
Collapse
|
145
|
Effects of substituents and charge on the RCHO⋯X–Y {X = Cl, Br, I; Y = –CF3, –CF2H, –CFH2, –CN, –CCH, –CCCN; R = –OH, –OCH3, –NH2, –O−} halogen-bonded complexes. Struct Chem 2015. [DOI: 10.1007/s11224-015-0680-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
146
|
The kernel energy method (KEM) delivers fast and accurate QTAIM electrostatic charge for atoms in large molecules. Struct Chem 2015. [DOI: 10.1007/s11224-015-0661-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
147
|
A theoretical study of solvent effects on the characteristics of the intramolecular hydrogen bond in Droxidopa. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0858-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
148
|
Thomas J, Liu X, Jäger W, Xu Y. Unusual H-Bond Topology and Bifurcated H-bonds in the 2-Fluoroethanol Trimer. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505934] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
149
|
Thomas J, Liu X, Jäger W, Xu Y. Unusual H-Bond Topology and Bifurcated H-bonds in the 2-Fluoroethanol Trimer. Angew Chem Int Ed Engl 2015; 54:11711-5. [PMID: 26276699 DOI: 10.1002/anie.201505934] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Indexed: 11/06/2022]
Abstract
By using a combination of rotational spectroscopy and ab initio calculations, an unusual H-bond topology was revealed for the 2-fluoroethanol trimer. The trimer exhibits a strong heterochiral preference and adopts an open OH⋅⋅⋅OH H-bond topology while utilizing two types of bifurcated H-bonds involving organic fluorine. This is in stark contrast to the cyclic OH⋅⋅⋅OH H-bond topology adopted by trimers of water and other simple alcohols. The strengths of different H-bonds in the trimer were analyzed by using the quantum theory of atoms in molecules. The study showcases a remarkable example of a chirality-induced switch in H-bond topology in a simple transient chiral fluoroalcohol. It provides important insight into the H-bond topologies of small fluoroalcohol aggregates, which are proposed to play a key role in protein folding and in enantioselective reactions and separations where fluoroalcohols serve as a (co)solvent.
Collapse
Affiliation(s)
- Javix Thomas
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2 (Canada)
| | - Xunchen Liu
- School of Mechanical Engineering, Shanghai Jiao Tong University, No.800 Dong Chuan Road, Shanghai, 200240 (P.R. China)
| | - Wolfgang Jäger
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2 (Canada)
| | - Yunjie Xu
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2 (Canada).
| |
Collapse
|
150
|
Torabifard H, Starovoytov ON, Ren P, Cisneros GA. Development of an AMOEBA water model using GEM distributed multipoles. Theor Chem Acc 2015. [DOI: 10.1007/s00214-015-1702-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|