251
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Oliveira BG, Araújo RCMU, Carvalho AB, Ramos MN. Small heterocyclics as hydrogen bond acceptors and donors: the case of the C2H3XS···NH3 complexes (X = H, F and CH3). Struct Chem 2009. [DOI: 10.1007/s11224-009-9458-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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252
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Blanco F, Alkorta I, Solimannejad M, Elguero J. Theoretical Study of the 1:1 Complexes between Carbon Monoxide and Hypohalous Acids. J Phys Chem A 2009; 113:3237-44. [DOI: 10.1021/jp810462h] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fernando Blanco
- Instituto de Química Médica (CSIC), Juan de la Cierva, 28006-Madrid, Spain, Quantum Chemistry Group, Department of Chemistry, Arak University, 38156-879 Arak, Iran, and Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway
| | - Ibon Alkorta
- Instituto de Química Médica (CSIC), Juan de la Cierva, 28006-Madrid, Spain, Quantum Chemistry Group, Department of Chemistry, Arak University, 38156-879 Arak, Iran, and Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway
| | - Mohammad Solimannejad
- Instituto de Química Médica (CSIC), Juan de la Cierva, 28006-Madrid, Spain, Quantum Chemistry Group, Department of Chemistry, Arak University, 38156-879 Arak, Iran, and Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway
| | - Jose Elguero
- Instituto de Química Médica (CSIC), Juan de la Cierva, 28006-Madrid, Spain, Quantum Chemistry Group, Department of Chemistry, Arak University, 38156-879 Arak, Iran, and Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway
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253
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Sundararajan K, Ramanathan N. Acetylene–phenol complexes: A matrix isolation infrared and ab initio study. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2008.11.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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254
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Gibbs GV, Wallace AF, Cox DF, Dove PM, Downs RT, Ross NL, Rosso KM. Role of Directed van der Waals Bonded Interactions in the Determination of the Structures of Molecular Arsenate Solids. J Phys Chem A 2009; 113:736-49. [DOI: 10.1021/jp807666b] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- G. V. Gibbs
- Department of Geosciences, and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, and Chemical and Materials Science Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - A. F. Wallace
- Department of Geosciences, and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, and Chemical and Materials Science Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - D. F. Cox
- Department of Geosciences, and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, and Chemical and Materials Science Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - P. M. Dove
- Department of Geosciences, and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, and Chemical and Materials Science Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - R. T. Downs
- Department of Geosciences, and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, and Chemical and Materials Science Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - N. L. Ross
- Department of Geosciences, and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, and Chemical and Materials Science Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - K. M. Rosso
- Department of Geosciences, and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, and Chemical and Materials Science Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
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255
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de Sousa AS, Reisinger SA, Fernandes MA, Perry CB, Varadwaj PR, Marques HM. The structure of N,N′-bis(2-hydroxyethyl)ethane-1,2-diamine and its complexes with Zn(ii) and Cd(ii). Dalton Trans 2009:10208-18. [DOI: 10.1039/b909843g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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256
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Kisowska K, Berski S, Latajka Z. The structure and chemical bonding in the N2CuX and N2···XCu (X = F, Cl, Br) systems studied by means of the molecular orbital and Quantum Chemical Topology methods. J Comput Chem 2008; 29:2677-92. [DOI: 10.1002/jcc.21010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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257
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The molecular properties of heterocyclic and homocyclic hydrogen-bonded complexes evaluated by DFT calculations and AIM densities. J Mol Model 2008; 15:123-31. [PMID: 19037670 DOI: 10.1007/s00894-008-0380-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2008] [Accepted: 10/31/2008] [Indexed: 10/21/2022]
Abstract
This theoretical study presents a comparative analysis of the molecular properties of heterocyclic (C2H4O...HF and C2H5...HF) and homocyclic (C3H6...HF) hydrogen-bonded complexes. Initially, the equilibrium geometries of these complexes were analyzed in detail at the B3LYP/6-311++G(d,p) level of theory. Subsequently, the interaction energies and polarizabilities were also evaluated, as well as the infrared stretch frequencies and absorption intensities. In addition, by combining intermolecular criteria and charge density concepts, calculations of Bader's theory of atoms in molecules were used to determine the maxima and minima for electron density in order to measure the strength of the n...H and ppi...H hydrogen bonds. Finally, the possibility of an F...H(alpha) secondary interaction between the fluoride (F) of hydrogen fluoride and the axial hydrogen atoms (H(alpha)) of the C2H4O and C2H5N heterocyclic rings was explored.
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258
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Gibbs GV, Downs RT, Cox DF, Rosso KM, Ross NL, Kirfel A, Lippmann T, Morgenroth W, Crawford TD. Experimental bond critical point and local energy density properties determined for Mn-O, Fe-O, and Co-O bonded interactions for tephroite, Mn2SiO4, fayalite, Fe2SiO4, and Co2SiO4 olivine and selected organic metal complexes: comparison with properties calculated for non-transition and transition metal M-O bonded interactions for silicates and oxides. J Phys Chem A 2008; 112:8811-23. [PMID: 18714960 DOI: 10.1021/jp804280j] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bond critical point (bcp) and local energy density properties for the electron density (ED) distributions, calculated with first-principle quantum mechanical methods for divalent transition metal Mn-, Co-, and Fe-containing silicates and oxides are compared with experimental model ED properties for tephroite, Mn 2SiO 4, fayalite, Fe 2SiO 4, and Co 2SiO 4 olivine, each determined with high-energy synchrotron single-crystal X-ray diffraction data. Trends between the experimental bond lengths, R(M-O), (M = Mn, Fe, Co), and the calculated bcp properties are comparable with those observed for non-transition M-O bonded interactions. The bcp properties, local total energy density, H( r c), and bond length trends determined for the Mn-O, Co-O, and Fe-O interactions are also comparable. A comparison is also made with model experimental bcp properties determined for several Mn-O, Fe-O, and Co-O bonded interactions for selected organometallic complexes and several oxides. Despite the complexities of the structures of the organometallic complexes, the agreement between the calculated and model experimental bcp properties is fair to good in several cases. The G( r c)/rho( r c) versus R(M-O) trends established for non-transition metal M-O bonded interactions hold for the transition metal M-O bonded interactions with G( r c)/rho( r c) increasing in value as H( r c) becomes progressively more negative in value, indicating an increasing shared character of the interaction as G( r c)/rho( r c) increases in value. As observed for the non-transition metal M-O bonded interactions, the Laplacian, nabla (2)rho( r c), increases in value as rho( r c) increases and as H( r c) decreases and becomes progressive more negative in value. The Mn-O, Fe-O, and Co-O bonded interactions are indicated to be of intermediate character with a substantial component of closed-shell character compared with Fe-S and Ni-S bonded interactions, which show greater shared character based on the | V( r c)|/ G( r c) bond character indicator. The atomic charges conferred on the transition metal atoms for the three olivines decrease with increasing atomic number from Mn to Fe to Co as the average M-O bond lengths decrease from 2.219 to 2.168 to 2.128 A, respectively.
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Affiliation(s)
- G. V. Gibbs
- Departments of Geosciences, Chemical Engineering, and Chemistry, Virginia Tech, Blacksburg, Virginia 24061; Department of Geosciences, University of Arizona, Tucson, Arizona 85721; Chemical and Materials Sciences Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352; Mineralogisch-Petrologisches Institut, Universität Bonn, Poppelsdorfer Schloss, D-53115 Bonn, Germany; GKSS, Max-Planck-Strasse, D-21502 Geesthacht,
| | - R. T. Downs
- Departments of Geosciences, Chemical Engineering, and Chemistry, Virginia Tech, Blacksburg, Virginia 24061; Department of Geosciences, University of Arizona, Tucson, Arizona 85721; Chemical and Materials Sciences Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352; Mineralogisch-Petrologisches Institut, Universität Bonn, Poppelsdorfer Schloss, D-53115 Bonn, Germany; GKSS, Max-Planck-Strasse, D-21502 Geesthacht,
| | - D. F. Cox
- Departments of Geosciences, Chemical Engineering, and Chemistry, Virginia Tech, Blacksburg, Virginia 24061; Department of Geosciences, University of Arizona, Tucson, Arizona 85721; Chemical and Materials Sciences Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352; Mineralogisch-Petrologisches Institut, Universität Bonn, Poppelsdorfer Schloss, D-53115 Bonn, Germany; GKSS, Max-Planck-Strasse, D-21502 Geesthacht,
| | - K. M. Rosso
- Departments of Geosciences, Chemical Engineering, and Chemistry, Virginia Tech, Blacksburg, Virginia 24061; Department of Geosciences, University of Arizona, Tucson, Arizona 85721; Chemical and Materials Sciences Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352; Mineralogisch-Petrologisches Institut, Universität Bonn, Poppelsdorfer Schloss, D-53115 Bonn, Germany; GKSS, Max-Planck-Strasse, D-21502 Geesthacht,
| | - N. L. Ross
- Departments of Geosciences, Chemical Engineering, and Chemistry, Virginia Tech, Blacksburg, Virginia 24061; Department of Geosciences, University of Arizona, Tucson, Arizona 85721; Chemical and Materials Sciences Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352; Mineralogisch-Petrologisches Institut, Universität Bonn, Poppelsdorfer Schloss, D-53115 Bonn, Germany; GKSS, Max-Planck-Strasse, D-21502 Geesthacht,
| | - A. Kirfel
- Departments of Geosciences, Chemical Engineering, and Chemistry, Virginia Tech, Blacksburg, Virginia 24061; Department of Geosciences, University of Arizona, Tucson, Arizona 85721; Chemical and Materials Sciences Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352; Mineralogisch-Petrologisches Institut, Universität Bonn, Poppelsdorfer Schloss, D-53115 Bonn, Germany; GKSS, Max-Planck-Strasse, D-21502 Geesthacht,
| | - T. Lippmann
- Departments of Geosciences, Chemical Engineering, and Chemistry, Virginia Tech, Blacksburg, Virginia 24061; Department of Geosciences, University of Arizona, Tucson, Arizona 85721; Chemical and Materials Sciences Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352; Mineralogisch-Petrologisches Institut, Universität Bonn, Poppelsdorfer Schloss, D-53115 Bonn, Germany; GKSS, Max-Planck-Strasse, D-21502 Geesthacht,
| | - W. Morgenroth
- Departments of Geosciences, Chemical Engineering, and Chemistry, Virginia Tech, Blacksburg, Virginia 24061; Department of Geosciences, University of Arizona, Tucson, Arizona 85721; Chemical and Materials Sciences Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352; Mineralogisch-Petrologisches Institut, Universität Bonn, Poppelsdorfer Schloss, D-53115 Bonn, Germany; GKSS, Max-Planck-Strasse, D-21502 Geesthacht,
| | - T. D. Crawford
- Departments of Geosciences, Chemical Engineering, and Chemistry, Virginia Tech, Blacksburg, Virginia 24061; Department of Geosciences, University of Arizona, Tucson, Arizona 85721; Chemical and Materials Sciences Division and the W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352; Mineralogisch-Petrologisches Institut, Universität Bonn, Poppelsdorfer Schloss, D-53115 Bonn, Germany; GKSS, Max-Planck-Strasse, D-21502 Geesthacht,
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259
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Calvo-Losada S, Quirante Sánchez JJ. Pericyclic versus Pseudopericyclic Reactions. What the Laplacian of the Charge Density, ∇2ρ(r), Has To Say about It? The Case of Cycloaddition Reactions. J Phys Chem A 2008; 112:8164-78. [DOI: 10.1021/jp711565g] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Saturnino Calvo-Losada
- Departamento de Química Física, Facultad de Ciencias, Campus de Teatinos, s/n, Universidad de Málaga, 29071 Málaga, Spain
| | - J. J. Quirante Sánchez
- Departamento de Química Física, Facultad de Ciencias, Campus de Teatinos, s/n, Universidad de Málaga, 29071 Málaga, Spain
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260
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Bobrov MF, Popova GV, Tsirel’son VG. Mono-and diphenoxy-substituted cyclotriphosphazenes: The molecular structure and interatomic interactions. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2008. [DOI: 10.1134/s0036024408080104] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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261
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262
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Theoretical study of N–H· · ·O hydrogen bonding properties and cooperativity effects in linear acetamide clusters. Theor Chem Acc 2008. [DOI: 10.1007/s00214-008-0456-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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263
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Parra RD, Ohlssen J. Cooperativity in Intramolecular Bifurcated Hydrogen Bonds: An Ab Initio Study. J Phys Chem A 2008; 112:3492-8. [DOI: 10.1021/jp711956u] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Rubén D. Parra
- Department of Chemistry, DePaul University, Chicago, Illinois 60614
| | - Jessica Ohlssen
- Department of Chemistry, DePaul University, Chicago, Illinois 60614
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264
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Gibbs GV, Downs RT, Cox DF, Ross NL, Boisen, MB, Rosso KM. Shared and Closed-Shell O−O Interactions in Silicates. J Phys Chem A 2008; 112:3693-9. [DOI: 10.1021/jp076396j] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G. V. Gibbs
- Department of Geosciences and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, Department of Mathematics, University of Idaho, Moscow, Idaho 83844-1103, and Chemical and Materials Science Division, and the W.R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - R. T. Downs
- Department of Geosciences and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, Department of Mathematics, University of Idaho, Moscow, Idaho 83844-1103, and Chemical and Materials Science Division, and the W.R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - D. F. Cox
- Department of Geosciences and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, Department of Mathematics, University of Idaho, Moscow, Idaho 83844-1103, and Chemical and Materials Science Division, and the W.R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - N. L. Ross
- Department of Geosciences and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, Department of Mathematics, University of Idaho, Moscow, Idaho 83844-1103, and Chemical and Materials Science Division, and the W.R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - M. B. Boisen,
- Department of Geosciences and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, Department of Mathematics, University of Idaho, Moscow, Idaho 83844-1103, and Chemical and Materials Science Division, and the W.R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - K. M. Rosso
- Department of Geosciences and Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, Department of Geosciences, University of Arizona, Tucson, Arizona 85721, Department of Mathematics, University of Idaho, Moscow, Idaho 83844-1103, and Chemical and Materials Science Division, and the W.R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
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265
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Kulkarni AD, Mennucci B, Tomasi J. Response of Scalar Fields and Hydrogen Bonding to Excited-State Molecular Solvation of Carbonyl Compounds. J Chem Theory Comput 2008; 4:578-85. [DOI: 10.1021/ct7002429] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anant D. Kulkarni
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy
| | - Benedetta Mennucci
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy
| | - Jacopo Tomasi
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy
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266
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Abstract
Evidence that the bond paths of the quantum theory of atoms-in-molecules (QTAIM) signal preferred quantum-mechanical exchange channels is presented. We show how bond paths between an atom A and the atoms B in its environment appear to be determined by competition among the A-B exchange-correlation energies that always contribute to stabilize the A-B interactions. These pairwise additive stabilizations depend neither on the attractive or repulsive nature of the classical electrostatic interaction between the atoms' charge densities, nor on the change in the self energies of the atoms involved. These other terms may well cause an overall molecular-energy increase in spite of a possibly large A-B exchange-correlation stabilization. After our proposal, bond paths, both at and out of equilibrium geometries, are endowed with a specific energetic meaning that should contribute to reconcile the orthodox QTAIM interpretation with other widely accepted views, and to settle recent controversies questioning the meaning of hydrogen-hydrogen bonding and the nature of the so-called "steric interactions", the role of bond paths in endohedral complexes, and the generality of the results provided by the QTAIM. Implications for the nature of more general closed-shell interactions are also briefly discussed.
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Affiliation(s)
- A Martín Pendás
- Departamento de Química Física y Analítica, Facultad de Química, Universidad de Oviedo, 33006, Oviedo, Spain.
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267
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Yim WL, Klüner T. Atoms-in-molecules analysis for planewave DFT calculations—A numerical approach on a successively interpolated charge density grid. J Comput Chem 2008; 29:1306-15. [DOI: 10.1002/jcc.20889] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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268
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Filho E, Ventura E, do Monte S, Oliveira B, Junior C, Rocha G, Vasconcellos M. Synthesis and conformational study of a new class of highly bioactive compounds. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.10.080] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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269
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270
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Roy D, Sunoj RB. Intramolecular nonbonding interactions in organoseleniums: Quantification using a computational thermochemical approach. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.theochem.2007.01.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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271
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Pakiari A, Eskandari K. Closed shell oxygen–oxygen bonding interaction based on electron density analysis. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.theochem.2006.10.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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272
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Geometries and properties of bimetallic phosphido-bridged complex Cp(CO)2W(μ-PPh2)W(CO)5 and Cp(CO)3W(μ-PPh2)W(CO)5. Chem Phys 2007. [DOI: 10.1016/j.chemphys.2006.11.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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273
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Réthoré C, Madalan A, Fourmigué M, Canadell E, Lopes EB, Almeida M, Clérac R, Avarvari N. O⋯S vs. N⋯S intramolecular nonbonded interactions in neutral and radical cation salts of TTF-oxazoline derivatives: synthesis, theoretical investigations, crystalline structures, and physical properties. NEW J CHEM 2007. [DOI: 10.1039/b701617d] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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274
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Oliveira B, Araújo R, Carvalho A, Lima E, Silva W, Ramos M, Tavares A. The hydrogen bond in the acetylene-2(HF) complex: A theoretical study about intramolecular and unusual π⋯H interactions using DFT and AIM calculations. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.theochem.2006.06.028] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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275
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Hydrogen bonds in alcohols:water complexes: A theoretical study about new intramolecular interactions via CHELPG and AIM calculations. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.theochem.2006.06.018] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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276
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Freitas RF, Galembeck SE. Computational Study of the Interaction between TIBO Inhibitors and Y181 (C181), K101, and Y188 Amino Acids. J Phys Chem B 2006; 110:21287-98. [PMID: 17048958 DOI: 10.1021/jp063058u] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The non-nucleoside inhibitors of HIV-1 reverse transcriptase (NNRTIs) are an important class of drugs employed in anti-HIV chemotherapy. TIBO compounds, which belong to the NNRTIs class, are potent inhibitors of the HIV-1 reverse transcriptase enzyme (HIV-1 RT). However, mutations in the amino acids present in the active site of these inhibitors limit their clinical use. In this work, the intermolecular interactions taking place between compounds of the TIBO family and Y181 (C181), K101, and Y188 amino acids are investigated. For this purpose the coordinates of three RT crystalline structures complexed with TIBO were taken from PDB database, and were analyzed by means of the B3LYP/6-31+G(d,p) model. The natural bond orbital (NBO) and atoms in molecules (AIM) methods indicate that not only does the Y181C mutation lead to loss of favorable interactions between the TIBO side chains and tyrosine, but it also affects the interaction between the inhibitor and K101 and Y188. Results also revealed that the interaction between TIBO and K101 is stabilized by N-H...O and N-H...S hydrogen bonds. This is the first time that the presence of the latter hydrogen bond (N-H...S) is reported to play an important role in the stabilization of the interaction between TIBO and K101. In addition the NBO and natural population analyses (NPA) indicate that the 8 Cl-TIBO inhibitor presents a more effective interaction with the Y181, K101, and Y188 than that of 9 Cl-TIBO.
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Affiliation(s)
- Renato F Freitas
- Departamento de Química, FFCLRP, Universidade de São Paulo, 14040-901 Ribeirão Preto-SP, Brasil
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277
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278
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Chmielewski MJ, Pawlicki M, Sprutta N, Szterenberg L, Latos-Grazyński L. Cadmium(II) and Zinc(II) Complexes of S-Confused Thiaporphyrin. Inorg Chem 2006; 45:8664-71. [PMID: 17029377 DOI: 10.1021/ic061091p] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of 5,10,15,20-tetraphenyl-2-thia-21-carbaporphyrin [S-confused thiaporphyrin, (SCPH)H] was optimized. The formation of the phlorin was detected, which was saturated at the meso carbon adjacent to thiophene. Phlorin converted readily to (SCPH)H in the final oxidation process. Insertion of cadmium(II) and zinc(II) into S-confused thiaporphyrin yielded (SCPH)Cd(II)Cl and (SCPH)Zn(II)Cl complexes. The macrocycle acted as a monoanionic ligand. Three nitrogen atoms and the C(21)H fragment of the inverted thiophene occupied equatorial positions. The compensation of the metal charge required the apical chloride coordination. The characteristic C(21)H resonances of the inverted thiophene ring were located at 1.71 and 1.86 ppm in the 1H NMR spectra of (SCPH)Cd(II)Cl and (SCPH)Zn(II)Cl, respectively. The proximity of the thiophene fragment to the metal ion induced direct scalar couplings between the spin-active nucleus of the metal (111/113Cd) and the adjacent 1H nucleus (J(CdH) = 8.97 Hz). The interaction of the metal ion and C(21)H also was reflected by significant changes of C(21) chemical shifts: (SCPH)Zn(II)Cl, 92.9 ppm and (SCPH)Cd(II)Cl, 88.2 ppm (free ligand (SCPH)H, 123.7 ppm). The X-ray analysis performed for (SCPH)Cd(II)Cl confirmed the side-on cadmium-thiophene interaction. The Cd...C(21) distance (2.615(7) A) exceeded the typical Cd-C bond lengths, but was much shorter than the corresponding van der Waals contact. The density functional theory (DFT) was applied to model the molecular structures of zinc(II) and cadmium(II) complexes of S-confused thiaporphyrin. Subsequent AIM analysis demonstrated that the accumulation of electron density between the metal and thiophene, which is necessary to induce these couplings, was fairly small. A bond path linked the cadmium(II) ion to the proximate C(22) carbon of the thiophene.
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Affiliation(s)
- Michał J Chmielewski
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie Street, Wrocław 50-383, Poland
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279
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Song HJ, Xiao HM, Dong HS. Cooperative effects, strengths of hydrogen bonds, and intermolecular interactions in circular cis, trans-cyclotriazane clusters (n=3–8). J Chem Phys 2006; 125:074308. [PMID: 16942340 DOI: 10.1063/1.2336209] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Based on Becke's three parameter functional [J. Chem. Phys. 98, 5648 (1993)] of density functional theory (DFT) with the correlation of Lee-Yang-Parr [Phys. Rev. B 37, 785 (1988)] (DFT/B3LYP), the natural bond orbital (NBO) analysis, the Bader's theory of atoms in molecule (AIM), our calculations indicate that as cluster size (n) increases, the n-dependent cooperative changes in the lengths of the N...H H bonds (HBs) and N-H bonds, the N-H stretching frequencies and intensities, and the n(N)-->sigma*(N-H) charge transfers are observed to be pervasive in the circular cis, trans-cyclotriazane clusters (n = 3-8), which is very different from the linear cis, trans-cyclotriazane clusters reported in previous work. According to the NBO and AIM theories, the cooperativity of the intermolecular n(N)-->sigma*(N-H) interaction leads to the n-dependent N...H contractions. In this way, the stronger N...H bond is formed, as reflected in the increase in their rho(r(cp)) values. This increased electron density is translated into the improved capacity to concentrate electrons at the HB bond critical point (BCP), i.e., a higher potential energy V(r(cp)). On the other hand, stronger repulsion is also activated to counteract the contraction, which is reflected in the increased G(r(cp)) value that gives the tendency of the system to dilute electrons at the HB BCP. In terms of the three-body symmetry-adapted perturbation theory (three-body SAPT), the induction nonadditivity accounts for up to 97% of the nonadditive energy in the circular trimer. It can believed that the marked cooperativity of the n(N)-->sigma*(N-H) interactions is of nonadditive induction in nature. The N...H formation and nature of cooperativity in the circular clusters differ from those in the linear clusters that have been reported previously. According to the SAPT(DFT) method which is a combination of SAPT with the asymptotically corrected DFT, the cis, trans-cyclotriazane systems should contain remarkable dispersion interactions. However, the short-range dispersion cannot be reproduced thoroughly by DFT/B3LYP. A quantum cluster equilibrium model illustrates the neglected dispersion energies and the nonadditive energies can affect markedly the properties of the liquid consisting of the circular clusters.
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Affiliation(s)
- Hua-Jie Song
- Department of Chemistry, Nanjing University of Science and Technology, Nanjing 210094, China.
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280
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The hydrogen bond strength: New proposals to evaluate the intermolecular interaction using DFT calculations and the AIM theory. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.06.019] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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281
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282
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283
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Popelier PLA. Quantum Chemical Topology: on Bonds and Potentials. INTERMOLECULAR FORCES AND CLUSTERS I 2005. [DOI: 10.1007/b135617] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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284
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Vila A, Mosquera RA. Quantum Theory of Atoms in Molecules Analysis on the Conformational Preferences of Vinyl Alcohol and Related Ethers. J Phys Chem A 2005; 109:6985-9. [PMID: 16834058 DOI: 10.1021/jp052673f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Vinyl alcohol, methyl vinyl ether, and tert-butyl vinyl ether were studied within the framework of the quantum theory of atoms in molecules at the B3LYP/6-311++G(2d,2p) level. Local and integrated properties of the charge density indicate that the anti conformational preference of the tert-butyl derivative is not due to a differing resonance contribution with regard to the less bulky vinyl ethers but to steric effects. There is a small delocalization of charge density, either total or pi, between oxygen and the terminal vinyl carbon, which does not support the resonance picture of vinyl compounds.
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Affiliation(s)
- Antonio Vila
- Departamento de Química Física, Universidade de Vigo, Facultade de Química, 36310 Vigo, Galicia, Spain
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285
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Stacking Interactions in Benzene and Cytosine Dimers: From Molecular Electron Density Perspective. Struct Chem 2005. [DOI: 10.1007/s11224-005-4455-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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286
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Wawrzyniak PK, Panek J, Lundell J, Latajka Z. On the nature of bonding in HCOOH...Ar and HCOOH...Kr complexes. J Mol Model 2005; 11:351-61. [PMID: 15889288 DOI: 10.1007/s00894-005-0267-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2004] [Accepted: 01/31/2005] [Indexed: 11/24/2022]
Abstract
The chemical interaction in HCOOH...Ng (Ng=Ar, Kr) complex was analyzed by topological analysis of the electron density based on Atoms-In-Molecules theory. For all computationally stable equilibrium structures of 1:1 HCOOH...Ng complexes, an intermolecular bond path with a "bond" critical point was found and perturbation of formic acid (FA) atomic basins and electron density was observed. The intermolecular interaction between the two complex subunits can be classified, according to its nature, as a closed-shell van der Waals type of interaction. However, one of the computed structures (complex II), pictures a noble gas atom attached linearly to the acidic O-H tail of FA. In this particular case, the electron density at the intermolecular bond critical point was found to resemble a hydrogen-bonded system and thus, may be termed a hydrogen-bond-like interaction. This change in the nature of the interaction is also shown by large perturbations of the FA properties found for this complex structure. The structural and vibrational perturbations are larger than for the other three structures and they increase for the Kr complexes compared to the Ar complex. [Figure: see text]. Electron density analysis of HCOOH...Ng (Ng=Ar,Kr) complex.
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287
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Parthasarathi R, Subramanian V, Sathyamurthy N. Hydrogen Bonding in Phenol, Water, and Phenol−Water Clusters. J Phys Chem A 2005; 109:843-50. [PMID: 16838955 DOI: 10.1021/jp046499r] [Citation(s) in RCA: 137] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Structure, stability, and hydrogen-bonding interaction in phenol, water, and phenol-water clusters have been investigated using ab initio and density functional theoretical (DFT) methods and using various topological features of electron density. Calculated interaction energies at MP2/6-31G level for clusters with similar hydrogen-bonding pattern reveal that intermolecular interaction in phenol clusters is slightly stronger than in water clusters. However, fusion of phenol and water clusters leads to stability that is akin to that of H(2)O clusters. The presence of hydrogen bond critical points (HBCP) and the values of rho(r(c)) and nabla(2)rho(r(c)) at the HBCPs provide an insight into the nature of closed shell interaction in hydrogen-bonded clusters. It is shown that the calculated values of total rho(r(c)) and nabla(2)rho(r(c)) of all the clusters vary linearly with the interaction energy.
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Affiliation(s)
- R Parthasarathi
- Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai, India
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288
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Sundararajan K, Sankaran K, Viswanathan K. A matrix isolation and ab initio study of the hydrogen bonded complexes of acetylene with pyridine. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2004.08.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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289
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Kocher N, Selinka C, Leusser D, Kost D, Kalikhman I, Stalke D. Experimental Charge Density Studies of Cyclotetrasilazane and Metal Complexes Containing the Di- and Tetraanion. Z Anorg Allg Chem 2004. [DOI: 10.1002/zaac.200400277] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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290
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291
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Kocher N, Henn J, Gostevskii B, Kost D, Kalikhman I, Engels B, Stalke D. Si-E (E = N, O, F) bonding in a hexacoordinated silicon complex: new facts from experimental and theoretical charge density studies. J Am Chem Soc 2004; 126:5563-8. [PMID: 15113227 DOI: 10.1021/ja038459r] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The concept of hypervalency in molecules, which hold more than eight valence electrons at the central atom, still is a topic of constant debate. There is general interest in silicon compounds with more than four substituents at the central silicon atom. The dispute, whether this silicon is hypervalent or highly coordinated, is enlightened by the first experimental charge density determination and subsequent topological analysis of three different highly polar Si-E (E = N, O, F) bonds in a hexacoordinated compound. The experiment reveals predominantly ionic bonding and much less covalent contribution than commonly anticipated. For comparison gas-phase ab initio calculations were performed on this compound. The results of the theoretical calculations underline the findings of the experiment.
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Affiliation(s)
- Nikolaus Kocher
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, 97074 Wuerzburg, Germany
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292
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Parthasarathi R, Amutha R, Subramanian V, Nair BU, Ramasami T. Bader's and Reactivity Descriptors' Analysis of DNA Base Pairs. J Phys Chem A 2004. [DOI: 10.1021/jp031285f] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- R. Parthasarathi
- Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
| | - R. Amutha
- Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
| | - V. Subramanian
- Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
| | | | - T. Ramasami
- Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
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293
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Stepień M, Latos-Grazyński L, Szterenberg L, Panek J, Latajka Z. Cadmium(II) and Nickel(II) Complexes of Benziporphyrins. A Study of Weak Intramolecular Metal−Arene Interactions. J Am Chem Soc 2004; 126:4566-80. [PMID: 15070375 DOI: 10.1021/ja039384u] [Citation(s) in RCA: 149] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Weak metal-arene interactions have been investigated in Zn, Cd, Hg, and Ni complexes of meso-tetraaryl m- and p-benziporphyrin (1 and 2) and of the new compound, m-benziporphodimethene (3). Compounds 1-3 incorporate the phenylene moiety into a macrocyclic structure so as to facilitate the interaction between the arene and coordinated metal ion. X-ray studies performed on Cd(II) and Ni(II) complexes show that the arene fragment approaches the ion at a distance much shorter than the sum of van der Waals radii. In chloronickel(II) m-benziporphyrin, a weak agostic bond is actually formed. In the NMR spectra of the Cd(II) and Hg(II) species, unusual (1)H-M and (13)C-M scalar couplings have been observed that are transmitted directly between the metal and the arene. DFT calculations performed for two Cd(II) species and subsequent AIM analysis show that the accumulation of electron density between the metal and arene necessary to induce these couplings is fairly small and the interaction is steric in nature. In the paramagnetic Ni(II) complexes of 1 and 3, the agostic proton of the m-phenylene exhibits large downfield (1)H NMR shifts (386 and 208 ppm at 298 K, respectively). An agostic mechanism of spin density transfer is proposed to explain these shifts as resulting from electron donation from the CH bond to the metal. In chloronickel(II) p-benziporphyrin, the inner protons of the p-phenylene have a contrastingly small shift (0.0 ppm at 298 K), indicating that in this case the agostic interaction is inefficient, in agreement with the X-ray data.
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Affiliation(s)
- Marcin Stepień
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie St., Wrocław 50 383, Poland
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294
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Density functional study on the role of electronic factors in variation of polymerization activity for Ziegler–Natta catalyst. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.theochem.2003.11.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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295
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Wawrzyniak PK, Panek J, Latajkaa Z, Lundell J. Theoretical study of the complex between formic acid and argon. J Mol Struct 2004. [DOI: 10.1016/j.molstruc.2003.12.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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296
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Raos G, Famulari A, Meille SV, Gallazzi MC, Allegra G. Interplay of Conformational States and Nonbonded Interactions in Substituted Bithiophenes. J Phys Chem A 2004. [DOI: 10.1021/jp036614i] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guido Raos
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Via L. Mancinelli 7, 20131 Milano, Italy
| | - Antonino Famulari
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Via L. Mancinelli 7, 20131 Milano, Italy
| | - Stefano V. Meille
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Via L. Mancinelli 7, 20131 Milano, Italy
| | - Maria C. Gallazzi
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Via L. Mancinelli 7, 20131 Milano, Italy
| | - Giuseppe Allegra
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Via L. Mancinelli 7, 20131 Milano, Italy
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297
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Affiliation(s)
- Svend J. Knak Jensen
- Department of Chemistry, Langelandsgade 140, University of Aarhus, DK-8000, Aarhus C, Denmark, Department of Chemistry, McMaster University, Hamillton, Ontario L8S 4M1, Canada, Lash Miller Chemical Laboratories, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada, and Department of Medical Chemistry, Szent Györgyi Medical Center, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | - Ting-Hua Tang
- Department of Chemistry, Langelandsgade 140, University of Aarhus, DK-8000, Aarhus C, Denmark, Department of Chemistry, McMaster University, Hamillton, Ontario L8S 4M1, Canada, Lash Miller Chemical Laboratories, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada, and Department of Medical Chemistry, Szent Györgyi Medical Center, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | - Imre G. Csizmadia
- Department of Chemistry, Langelandsgade 140, University of Aarhus, DK-8000, Aarhus C, Denmark, Department of Chemistry, McMaster University, Hamillton, Ontario L8S 4M1, Canada, Lash Miller Chemical Laboratories, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada, and Department of Medical Chemistry, Szent Györgyi Medical Center, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
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298
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Klein RA. Hydrogen bonding in diols and binary diol-water systems investigated using DFT methods. II. Calculated infrared OH-stretch frequencies, force constants, and NMR chemical shifts correlate with hydrogen bond geometry and electron density topology. A reevaluation of geometrical criteria for hydrogen bonding. J Comput Chem 2003; 24:1120-31. [PMID: 12759911 DOI: 10.1002/jcc.10256] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Although the two hydroxyl groups in 1,2-diols interact as evidenced by NMR and IR spectroscopic shifts, electron density topological analysis has shown a bond critical point (BCP) and atomic bond path to be absent (Klein, R. A.; J Comp Chem 2002, 23, 585-599; J Am Chem Soc 2002, 124, 13931-13937), indicating that no intramolecular hydrogen bond is formed. Here, we demonstrate that small NMR or IR shifts are neither necessarily diagnostic nor sufficient as indicators of hydrogen bond formation; moreover, modified van der Waals atomic radii are needed for estimating maximum nuclear interaction distances and nuclear interpenetration.
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Affiliation(s)
- Roger A Klein
- Institute for Physiological Chemistry, University of Bonn, Nussallee 11, D-53115 Bonn, Federal Republic of Germany.
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299
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Vila A, Mosquera RA. On the different origin of the stabilisation of oxygen versus sulphur H-bond complexes with water. Chem Phys 2003. [DOI: 10.1016/s0301-0104(03)00185-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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300
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Origin of variation in polymerization activity for Ziegler–Natta catalyst with chloride and alkoxy ligands: a density functional study. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00049-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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