학술논문
Unusual Metal-Metal Bonding in a Dinuclear Pt-Au Complex: Snapshot of a Transmetalation Process.
Document Type
Article
Source
Subject
*METAL-metal bonds
*CHEMICAL bonds
*CRYSTALLIZATION
*METALATION
*PLATINUM
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Language
ISSN
1433-7851
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 of 2 show the persistence of the Pt-Au bond in solution and the occurrence of unusual fluxional behavior involving the [PtII] and [AuI] metal fragments. The [PtII]⋅⋅⋅ [AuI] 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. [ABSTRACT FROM AUTHOR]