Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 24, Pages 6978-6982Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201602081
Keywords
DFT calculations; donor-acceptor systems; fluxionality; heterobimetallic complexes; metal-metal bonds
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Funding
- Spanish MINECO/FEDER [CTQ2015-67461-P, CTQ2013-44303P, CTQ2014-51912-REDC]
- Departamento de Industria e Innovacion del Gobierno de Aragon and Fondo Social Europeo (Grupo Consolidado E21: Quimica Inorganica y de los Compuestos Organometalicos)
- Universidad de Zaragoza [UZ2014-CIE-01]
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The dinuclear Pt-Au complex [(CNC)(PPh3)PtAu-(PPh3)](ClO4) (2) (CNC = 2,6-diphenylpyridinate) was prepared. Its crystal structure shows a rare metal-metal bonding situation, with very short Pt-Au and Au-C-ipso(CNC) distances and dissimilar Pt-C-ipso(CNC) bonds. Multinuclear NMR spectra of 2 show the persistence of the Pt-Au bond in solution and the occurrence of unusual fluxional behavior involving the [Pt-II] and [Au-I] metal fragments. The [Pt-II]center dot center dot center dot[Au-I] interaction has been thoroughly studied by means of DFT calculations. The observed bonding situation in 2 can be regarded as a model for an intermediate in a transmetalation process.
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