151
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Dötz KH, Stendel J. Fischer Carbene Complexes in Organic Synthesis: Metal-Assisted and Metal-Templated Reactions. Chem Rev 2009; 109:3227-74. [DOI: 10.1021/cr900034e] [Citation(s) in RCA: 284] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Karl Heinz Dötz
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany
| | - Joachim Stendel
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany
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152
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Johnson LE, DuPré DB. QTAIM Analysis of Ligand Properties and Mechanisms of Tuning of 6-Membered Ring N-Heterocyclic Carbenes in Transition Metal Complexes through Ring-Substituent Variation. J Phys Chem A 2009; 113:8647-53. [DOI: 10.1021/jp901533g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lucius E. Johnson
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Donald B. DuPré
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
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153
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Poater A, Ragone F, Correa A, Cavallo L. Exploring the Reactivity of Ru-Based Metathesis Catalysts with a π-Acid Ligand Trans to the Ru−Ylidene Bond. J Am Chem Soc 2009; 131:9000-6. [DOI: 10.1021/ja902552m] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Albert Poater
- MoLNaC - Modeling Lab for Nanostructures and Catalysis, Dipartimento di Chimica, Università di Salerno, Via Ponte don Melillo, I-84084 Fisciano (SA), Italy
| | - Francesco Ragone
- MoLNaC - Modeling Lab for Nanostructures and Catalysis, Dipartimento di Chimica, Università di Salerno, Via Ponte don Melillo, I-84084 Fisciano (SA), Italy
| | - Andrea Correa
- MoLNaC - Modeling Lab for Nanostructures and Catalysis, Dipartimento di Chimica, Università di Salerno, Via Ponte don Melillo, I-84084 Fisciano (SA), Italy
| | - Luigi Cavallo
- MoLNaC - Modeling Lab for Nanostructures and Catalysis, Dipartimento di Chimica, Università di Salerno, Via Ponte don Melillo, I-84084 Fisciano (SA), Italy
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154
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Affiliation(s)
- Z. Liu
- Department of Chemistry, Hebei University of Engineering, Handan, 056038 Hebei, China
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155
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Poater A, Cosenza B, Correa A, Giudice S, Ragone F, Scarano V, Cavallo L. SambVca: A Web Application for the Calculation of the Buried Volume of N-Heterocyclic Carbene Ligands. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200801160] [Citation(s) in RCA: 643] [Impact Index Per Article: 42.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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156
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Affiliation(s)
- Joan Vignolle
- Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse (France), CNRS, LHFA UMR 5069, F-31062 Toulouse, France, and UCR−CNRS Joint Research Chemistry Laboratory, UMI 2957, Department of Chemistry, University of California, Riverside, California 92521-0403
| | - Xavier Cattoën
- Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse (France), CNRS, LHFA UMR 5069, F-31062 Toulouse, France, and UCR−CNRS Joint Research Chemistry Laboratory, UMI 2957, Department of Chemistry, University of California, Riverside, California 92521-0403
| | - Didier Bourissou
- Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse (France), CNRS, LHFA UMR 5069, F-31062 Toulouse, France, and UCR−CNRS Joint Research Chemistry Laboratory, UMI 2957, Department of Chemistry, University of California, Riverside, California 92521-0403
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157
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Tapu D, Dixon DA, Roe C. 13C NMR Spectroscopy of “Arduengo-type” Carbenes and Their Derivatives. Chem Rev 2009; 109:3385-407. [DOI: 10.1021/cr800521g] [Citation(s) in RCA: 285] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniela Tapu
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, Georgia 30144, Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, and Central Research & Development, E. I. DuPont de Nemours and Co., Inc., Experimental Station, Wilmington, Delaware 19880
| | - David A. Dixon
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, Georgia 30144, Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, and Central Research & Development, E. I. DuPont de Nemours and Co., Inc., Experimental Station, Wilmington, Delaware 19880
| | - Christopher Roe
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, Georgia 30144, Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, and Central Research & Development, E. I. DuPont de Nemours and Co., Inc., Experimental Station, Wilmington, Delaware 19880
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158
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Liu J, Han Y, Ge Q. Effect of Doped Transition Metal on Reversible Hydrogen Release/Uptake from NaAlH4. Chemistry 2009; 15:1685-95. [DOI: 10.1002/chem.200801045] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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159
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Caputo CA, Jennings MC, Tuononen HM, Jones ND. Phospha-Fischer Carbenes: Synthesis, Structure, Bonding, and Reactions of Pd(0)− and Pt(0)−Phosphenium Complexes. Organometallics 2009. [DOI: 10.1021/om800973v] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christine A. Caputo
- Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7, and Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Michael C. Jennings
- Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7, and Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Heikki M. Tuononen
- Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7, and Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Nathan D. Jones
- Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7, and Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
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160
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Tukov AA, Normand AT, Nechaev MS. N-heterocyclic carbenes bearing two, one and no nitrogen atoms at the ylidene carbon: insight from theoretical calculations. Dalton Trans 2009:7015-28. [DOI: 10.1039/b906969k] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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161
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Fey N, Haddow MF, Harvey JN, McMullin CL, Orpen AG. A ligand knowledge base for carbenes (LKB-C): maps of ligand space. Dalton Trans 2009:8183-96. [DOI: 10.1039/b909229c] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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162
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Fernández I, Mancheño M, Vicente R, López L, Sierra M. Transmetalation Reactions from Fischer Carbene Complexes to Late Transition Metals: A DFT Study. Chemistry 2008; 14:11222-30. [DOI: 10.1002/chem.200801378] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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163
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Field LD, Li HL, Magill AM. Base-Mediated Conversion of Hydrazine to Diazene and Dinitrogen at an Iron Center. Inorg Chem 2008; 48:5-7. [DOI: 10.1021/ic801856q] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Leslie D. Field
- School of Chemistry, University of New South Wales, New South Wales 2052, Australia
| | - Hsiu L. Li
- School of Chemistry, University of New South Wales, New South Wales 2052, Australia
| | - Alison M. Magill
- School of Chemistry, University of New South Wales, New South Wales 2052, Australia
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164
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Radius U, Bickelhaupt FM. Bonding of Imidazol-2-ylidene Ligands in Nickel Complexes. Organometallics 2008. [DOI: 10.1021/om800186b] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Udo Radius
- Institut für Anorganische Chemie der Universität Karlsruhe (TH), Engesserstrasse, Geb. 30.45, D-76131 Karlsruhe, Germany, and Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling, Scheikundig Laboratorium der Vrije Universiteit, De Boelelaan 1083, NL-1081 HV Amsterdam, The Netherlands
| | - F. Matthias Bickelhaupt
- Institut für Anorganische Chemie der Universität Karlsruhe (TH), Engesserstrasse, Geb. 30.45, D-76131 Karlsruhe, Germany, and Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling, Scheikundig Laboratorium der Vrije Universiteit, De Boelelaan 1083, NL-1081 HV Amsterdam, The Netherlands
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165
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Yüksel D, Düz B, Sevin F. DFT Study of the 1-Octene Metathesis Reaction Mechanism with WCl6/C Catalytic System. J Phys Chem A 2008; 112:4636-43. [DOI: 10.1021/jp076044c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dilek Yüksel
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
| | - Bülent Düz
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
| | - Fatma Sevin
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
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166
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La Macchia G, Gagliardi L, Power PP, Brynda M. Large Differences in Secondary Metal−Arene Interactions in the Transition-Metal Dimers ArMMAr (Ar = Terphenyl; M = Cr, Fe, or Co): Implications for Cr−Cr Quintuple Bonding. J Am Chem Soc 2008; 130:5104-14. [DOI: 10.1021/ja0771890] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Giovanni La Macchia
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, and Department of Chemistry, University of Geneva, 30 quai E. Ansermet, Geneva 1211, Switzerland
| | - Laura Gagliardi
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, and Department of Chemistry, University of Geneva, 30 quai E. Ansermet, Geneva 1211, Switzerland
| | - Philip P. Power
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, and Department of Chemistry, University of Geneva, 30 quai E. Ansermet, Geneva 1211, Switzerland
| | - Marcin Brynda
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, and Department of Chemistry, University of Geneva, 30 quai E. Ansermet, Geneva 1211, Switzerland
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167
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168
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Kausamo A, Tuononen HM, Krahulic KE, Roesler R. N-Heterocyclic Carbenes with Inorganic Backbones: Electronic Structures and Ligand Properties. Inorg Chem 2008; 47:1145-54. [DOI: 10.1021/ic7020929] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anna Kausamo
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland, and Department of Chemistry, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada
| | - Heikki M. Tuononen
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland, and Department of Chemistry, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada
| | - Kelly E. Krahulic
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland, and Department of Chemistry, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada
| | - Roland Roesler
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland, and Department of Chemistry, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada
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169
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Sierra MA, Fernández I, Cossío FP. Computational and experimental tools in solving some mechanistic problems in the chemistry of Fischer carbene complexes. Chem Commun (Camb) 2008:4671-82. [DOI: 10.1039/b807806h] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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170
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Dyson G, Frison JC, Simonovic S, Whitwood AC, Douthwaite RE. Synthesis and Structural Variation of Iron, Rhodium, Palladium, and Silver Complexes of a Chiral N-Heterocyclic Carbene−Phenoxyimine Hybrid Ligand. Organometallics 2008. [DOI: 10.1021/om7009478] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gavin Dyson
- Department of Chemistry, University of York, Heslington, York, U.K., YO10 5DD
| | - Jean-Cédric Frison
- Department of Chemistry, University of York, Heslington, York, U.K., YO10 5DD
| | - Stevan Simonovic
- Department of Chemistry, University of York, Heslington, York, U.K., YO10 5DD
| | - Adrian C. Whitwood
- Department of Chemistry, University of York, Heslington, York, U.K., YO10 5DD
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171
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Tuononen HM, Roesler R, Dutton JL, Ragogna PJ. Electronic structures of main-group carbene analogues. Inorg Chem 2007; 46:10693-706. [PMID: 17997547 DOI: 10.1021/ic701350e] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The electronic structures of 15 group 13-16 carbene analogues are analyzed using various quantum chemical methods and compared to the data obtained for the parent N-heterocyclic carbene (NHC), imidazol-2-ylidene. The results of this study present a uniform analysis of the similarities and differences in the electronic structures of p-block main-group carbene analogues. Though all systems are formally isovalent, the theoretical analyses unambiguously indicate that their electronic structures run the gamut from C=C localized (group 13) to C=N localized (group 16) via intermediate, more delocalized, systems. In particular, neither the stibenium ion nor any of the chalcogenium dications is a direct analogue of imidazol-2-ylidene as they all contain two lone pairs of electrons around the divalent main-group center, instead of the expected one. The reason behind the gradual change in the electronic structure of main-group analogues of imidazol-2-ylidene was traced to the total charge of the systems, which changes from anionic to dicationic when moving from left to right in the periodic table. Results from theoretical analyses of aromaticity show that all group 13-16 analogues of imidazol-2-ylidene display some degree of aromatic character. The heavier group 13 anions benefit the least from pi-electron delocalization, whereas the cationic group 15 systems are on par with the parent carbon system and display only slightly less aromatic character than cyclopentadienide, a true 6pi-electron aromatic species. The sigma-donor and pi-acceptor ability of the different main-group carbene analogues are also evaluated.
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Affiliation(s)
- Heikki M Tuononen
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland. hetuonon@ jyu.fi
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172
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173
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Mó O, Yáñez M, Salpin JY, Tortajada J. Thermochemistry, bonding, and reactivity of Ni+ and Ni2+ in the gas phase. MASS SPECTROMETRY REVIEWS 2007; 26:474-516. [PMID: 17492664 DOI: 10.1002/mas.20134] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
In this review, we present a general overview on the studies carried out on Ni(+-)- and Ni(2+)-containing systems in the gas phase since 1996. We have focused our attention in the determination of binding energies in parallel with an analysis of the structure and bonding of the complexes formed by the interaction of Ni(+) with one ligand, or in clusters where this metal ion binds several identical or different ligands. Solvation of Ni(2+) by different ligands is also discussed, together with the theoretical information available of doubly charged Ni-containing species. The final section of this review is devoted to an analysis of the gas-phase uni- and bimolecular reactivity of Ni(+) and Ni(2+) complexes.
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Affiliation(s)
- Otilia Mó
- Departamento de Química, C-9, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain
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174
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Sparta M, Børve KJ, Jensen VR. Activity of Rhodium-Catalyzed Hydroformylation: Added Insight and Predictions from Theory. J Am Chem Soc 2007; 129:8487-99. [PMID: 17555314 DOI: 10.1021/ja070395n] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have performed a density functional theory investigation of hydroformylation of ethylene for monosubstituted rhodium-carbonyl catalysts, HRh(CO)3L, where the modifying ligand, L, is a phosphite (L = P(OMe)3, P(OPh)3, or P(OCH2CF3)3), a phosphine (L = PMe3, PEt3, PiPr3, or PPh3), or a N-heterocyclic carbene (NHC) based on the tetrahydropyrimidine, imidazol, or tetrazol ring, respectively. The study follows the Heck and Breslow mechanism. Excellent correspondence between our calculations and existing experimental information is found, and the present results constitute the first example of a realistic quantum chemical description of the catalytic cycle of hydroformylation using ligand-modified rhodium carbonyl catalysts. This description explains the mechanistic and kinetic basis of the contemporary understanding of this class of reaction and offers unprecedented insight into the electronic and steric factors governing catalytic activity. The insight has been turned into structure-activity relationships and used as guidelines when also subjecting to calculation phosphite and NHC complexes that have yet to be reported experimentally. The latter calculations illustrate that it is possible to increase the electron-withdrawing capacity of both phosphite and NHC ligands compared to contemporary ligands through directed substitution. Rhodium complexes of such very electron-withdrawing ligands are predicted to be more active than contemporary catalysts for hydroformylation.
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Affiliation(s)
- Manuel Sparta
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
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175
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Krapp A, Pandey KK, Frenking G. Transition Metal−Carbon Complexes. A Theoretical Study. J Am Chem Soc 2007; 129:7596-610. [PMID: 17530845 DOI: 10.1021/ja0691324] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The equilibrium geometries and bond dissociation energies of 16VE and 18VE complexes of ruthenium and iron with a naked carbon ligand are reported using density functional theory at the BP86/TZ2P level. Bond energies were also calculated at CCSD(T) using TZ2P quality basis sets. The calculations of [Cl2(PMe3)2Ru(C)] (1Ru), [Cl2(PMe3)2Fe(C)] (1Fe), [(CO)2(PMe3)2Ru(C)] (2Ru), [(CO)2(PMe3)2Fe(C)] (2Fe), [(CO)4Ru(C)] (3Ru), and [(CO)4Fe(C)] (3Fe) show that 1Ru has a very strong Ru-C bond which is stronger than the Fe-C bond in 1Fe. The metal-carbon bonds in the 18VE complexes 2Ru-3Fe are weaker than those in the 16VE species. Calculations of the related carbonyl complexes [(PMe3)2Cl2Ru(CO)] (4Ru), [(PMe3)2Cl2Fe(CO)] (4Fe), [(PMe3)2Ru(CO)3] (5Ru), [(PMe3)2Fe(CO)3] (5Fe), [Ru(CO)5] (6Ru), and [Fe(CO)5] (6Fe) show that the metal-CO bonds are much weaker than the metal-C bonds. The 18VE iron complexes have a larger BDE than the 18VE ruthenium complexes, while the opposite trend is calculated for the 16VE compounds. Charge and energy decomposition analyses (EDA) have been carried out for the calculated compounds. The Ru-C and Fe-C bonds in 1Ru and 1Fe are best described in terms of two electron-sharing bonds with sigma and pi symmetry and one donor-acceptor pi bond. The bonding situation in the 18 VE complexes 2Ru-3Fe is better described in terms of closed shell donor-acceptor interactions in accordance with the Dewar-Chatt-Duncanson model. The bonding analysis clearly shows that the 16VE carbon complexes 1Ru and 1Fe are much more strongly stabilized by metal-C sigma interactions than the 18VE complexes which is probably the reason why the substituted homologue of 1Ru could become isolated. The EDA calculations show that the nature of the TM-C and TM-CO binding interactions resembles each other. The absolute values for the energy terms which contribute to Delta(Eint) are much larger for the carbon complexes than for the carbonyl complexes, but the relative strengths of the energy terms are not very different from each other. The pi bonding contribution to the orbital interactions in the carbon complexes is always stronger than sigma bonding. There is no particular bonding component which is responsible for the reversal of the relative bond dissociation energies of the Ru and Fe complexes when one goes from the 16VE complexes to the 18VE species. That the 18 VE compounds have longer and weaker TM-C and TM-CO bonds than the respective 16 VE compounds holds for all complexes. This is because the LUMO in the 16 VE species is a sigma-antibonding orbital which becomes occupied in the 18 VE species.
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Affiliation(s)
- Andreas Krapp
- School of Chemical Sciences, Devi Ahilya University Indore, Indore-452017, India
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176
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Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2005. Coord Chem Rev 2007. [DOI: 10.1016/j.ccr.2006.11.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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177
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Rafat M, Popelier PLA. Atom-atom partitioning of total (super)molecular energy: The hidden terms of classical force fields. J Comput Chem 2007; 28:292-301. [PMID: 17109431 DOI: 10.1002/jcc.20530] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Classical force fields describe the interaction between atoms that are bonded or nonbonded via simple potential energy expressions. Their parameters are often determined by fitting to ab initio energies and electrostatic potentials. A direct quantum chemical guide to constructing a force field would be the atom-atom partitioning of the energy of molecules and van der Waals complexes relevant to the force field. The authors used the theory of quantum chemical topology to partition the energy of five systems [H2, CO, H2O, (H2O)2, and (HF)2] in terms of kinetic, Coulomb, and exchange intra-atomic and interatomic contributions. The authors monitored the variation of these contributions with changing bond length or angle. Current force fields focus only on interatomic interaction energies and assume that these purely potential energy terms are the only ones that govern structure and dynamics in atomistic simulations. Here the authors highlight the importance of self-energy terms (kinetic and intra-atomic Coulomb and exchange).
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Affiliation(s)
- M Rafat
- School of Chemistry, University of Manchester, Faraday Building, North Campus, Manchester M60 1QD, Great Britain
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178
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Boydston AJ, Rice JD, Sanderson MD, Dykhno OL, Bielawski CW. Synthesis and Study of Bidentate Benzimidazolylidene−Group 10 Metal Complexes and Related Main-Chain Organometallic Polymers. Organometallics 2006. [DOI: 10.1021/om060494u] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrew J. Boydston
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712
| | - Jonathan D. Rice
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712
| | - Matthew D. Sanderson
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712
| | - Olga L. Dykhno
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712
| | - Christopher W. Bielawski
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712
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179
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Mercs L, Labat G, Neels A, Ehlers A, Albrecht M. Piano-Stool Iron(II) Complexes as Probes for the Bonding of N-Heterocyclic Carbenes: Indications for π-Acceptor Ability. Organometallics 2006. [DOI: 10.1021/om060637c] [Citation(s) in RCA: 174] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Laszlo Mercs
- Department of Chemistry, University of Fribourg, Ch. du Musée 9, CH-1700 Fribourg, Switzerland, Institute of Microtechnology, University of Neuchâtel, Rue Emile Argand 11, CH-2009 Neuchâtel, Switzerland, and Scheikundig Laboratorium, Vrije Universiteit van Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Gaël Labat
- Department of Chemistry, University of Fribourg, Ch. du Musée 9, CH-1700 Fribourg, Switzerland, Institute of Microtechnology, University of Neuchâtel, Rue Emile Argand 11, CH-2009 Neuchâtel, Switzerland, and Scheikundig Laboratorium, Vrije Universiteit van Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Antonia Neels
- Department of Chemistry, University of Fribourg, Ch. du Musée 9, CH-1700 Fribourg, Switzerland, Institute of Microtechnology, University of Neuchâtel, Rue Emile Argand 11, CH-2009 Neuchâtel, Switzerland, and Scheikundig Laboratorium, Vrije Universiteit van Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Andreas Ehlers
- Department of Chemistry, University of Fribourg, Ch. du Musée 9, CH-1700 Fribourg, Switzerland, Institute of Microtechnology, University of Neuchâtel, Rue Emile Argand 11, CH-2009 Neuchâtel, Switzerland, and Scheikundig Laboratorium, Vrije Universiteit van Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Martin Albrecht
- Department of Chemistry, University of Fribourg, Ch. du Musée 9, CH-1700 Fribourg, Switzerland, Institute of Microtechnology, University of Neuchâtel, Rue Emile Argand 11, CH-2009 Neuchâtel, Switzerland, and Scheikundig Laboratorium, Vrije Universiteit van Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
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Forster TD, Krahulic KE, Tuononen HM, McDonald R, Parvez M, Roesler R. A σ-Donor with a Planar Six-π-Electron B2N2C2 Framework: Anionic N-Heterocyclic Carbene or Heterocyclic Terphenyl Anion? Angew Chem Int Ed Engl 2006; 45:6356-9. [PMID: 16941508 DOI: 10.1002/anie.200601229] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Taryn D Forster
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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181
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Forster TD, Krahulic KE, Tuononen HM, McDonald R, Parvez M, Roesler R. A σ-Donor with a Planar Six-π-Electron B2N2C2 Framework: Anionic N-Heterocyclic Carbene or Heterocyclic Terphenyl Anion? Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200601229] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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182
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Poater A, Duran M, Jaque P, Toro-Labbé A, Solà M. Molecular Structure and Bonding of Copper Cluster Monocarbonyls CunCO (n = 1−9). J Phys Chem B 2006; 110:6526-36. [PMID: 16570950 DOI: 10.1021/jp054690a] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this work we analyze CO binding on small neutral copper clusters, Cun (n = 1-9). Molecular structures and reactivity descriptors of copper clusters are computed and discussed. The results show that the condensed Fukui functions and the frontier molecular orbital theory are useful tools to predict the selectivity of CO adsorption on these small clusters. To get further insight into the CO binding to copper clusters, an energy decomposition analysis of the CO binding energy is performed. The Cs symmetry of the formed CunCO clusters (n = 1-8) allows the separation between the orbital interaction terms corresponding to donation and back-donation. It is found that, energetically, the donation is twice as important as back-donation.
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Affiliation(s)
- Albert Poater
- Institut de Química Computacional and Departament de Química, Universitat de Girona, E-17071 Girona, Catalonia, Spain
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