Agostic Interactions in Nickel(II) Complexes: Trans Influence of Ancillary Ligands on the Strength of the Bond

作者: Bimal Pudasaini , Benjamin G. Janesko

DOI: 10.1021/OM400731J

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摘要: The selectivity of transition-metal-catalyzed alkyl cross-coupling is significantly affected by agostic interactions. We report a systematic computational study how ligand trans influence affects the strength β-agostic interactions in Ni(II)–ethyl complexes selected to model intermediates. roles π back-donation and in-plane coupling are highlighted. Calculations with carbene ligands illustrate relevance these ideas for design.

参考文章(133)
Ranjan Jana, Tejas P. Pathak, Matthew S. Sigman, Advances in transition metal (Pd, Ni, Fe)-catalyzed cross-coupling reactions using alkyl-organometallics as reaction partners. Chemical Reviews. ,vol. 111, pp. 1417- 1492 ,(2011) , 10.1021/CR100327P
Markus Reiher, Alexander Wolf, Exact decoupling of the Dirac Hamiltonian. II. The generalized Douglas-Kroll-Hess transformation up to arbitrary order. Journal of Chemical Physics. ,vol. 121, pp. 10945- 10956 ,(2004) , 10.1063/1.1818681
P. Jeffrey Hay, Willard R. Wadt, Ab initio effective core potentials for molecular calculations. Potentials for K to Au including the outermost core orbitals Journal of Chemical Physics. ,vol. 82, pp. 299- 310 ,(1985) , 10.1063/1.448975
Thomas J. Anderson, Gavin D. Jones, David A. Vicic, Evidence for a NiI Active Species in the Catalytic Cross-Coupling of Alkyl Electrophiles Journal of the American Chemical Society. ,vol. 126, pp. 8100- 8101 ,(2004) , 10.1021/JA0483903
Charles H. DePuy, Veronica M. Bierbaum, Gas-phase reactions of organic anions as studied by the flowing afterglow technique Accounts of Chemical Research. ,vol. 12, pp. 146- 153 ,(1981) , 10.1021/AR00065A003
Kelly E. Krahulic, Gary D. Enright, Masood Parvez, Roland Roesler, A stable N-heterocyclic carbene with a diboron backbone. Journal of the American Chemical Society. ,vol. 127, pp. 4142- 4143 ,(2005) , 10.1021/JA050129E
Chadwick A. Tolman, Phosphorus ligand exchange equilibriums on zerovalent nickel. Dominant role for steric effects Journal of the American Chemical Society. ,vol. 92, pp. 2956- 2965 ,(1970) , 10.1021/JA00713A007
A. Seidl, A. Görling, P. Vogl, J. A. Majewski, M. Levy, Generalized Kohn-Sham schemes and the band-gap problem Physical Review B. ,vol. 53, pp. 3764- 3774 ,(1996) , 10.1103/PHYSREVB.53.3764