Unusual Metal–Metal Bonding in a Dinuclear Pt–Au Complex: Snapshot of a Transmetalation Process. (25th April 2016)

• Record Type: Journal Article
• Authors: Baya, Miguel; Belío, Úrsula; Fernández, Israel; Fuertes, Sara; Martín, Antonio
• Is Part Of: Angewandte Chemie. Volume 128:Number 24(2016)
• Page Start: 7092
• Page End: 7096
• Publication Date: 2016-04-25
• Subjects: DFT-Rechnungen -- Donor-Akzeptor-Systeme -- Fluxionalität -- Heterodimetallische Komplexe -- Metall-Metall-Bindungen; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201602081
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: The dinuclear Pt–Au complex [(CNC)(PPh3 )Pt Au(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 of2 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 ]⋅⋅⋅ [Au I ] interaction has been thoroughly studied by means of DFT calculations. The observed bonding situation in2 can be regarded as a model for an intermediate in a transmetalation process.