N-Functionalised heterocyclic carbene complexes of silver


Tulloch, A. A. D., Danopoulos, A. A., Winston, S., Kleinhenz, S. and Eastham, G. (2000) N-Functionalised heterocyclic carbene complexes of silver. Journal of the Chemical Society, Dalton Transactions, (24), 4499-4506. (doi: 10.1039/b007504n).

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Description/Abstract

N-Functionalised imidazol-2-ylidene carbene complexes of Ag-I have been prepared by interaction of the corresponding imidazolium salt with Ag2O in dichloromethane or 1,2-dichloroethane in the presence of molecular sieves or with Ag2CO3 in 1,2-dichloroethane. In an analogous way disilver(I) complexes of o-phenylenedimethylenebis(imidazol-2-ylidene) have been obtained. Their structures, as determined by X-ray crystallography, indicate that the carbene ligand acts as monodentate from the carbene end or as a bridge between two different metal atoms. In one case the silver is coordinated by two carbene ligands. In the majority of the structurally characterised complexes the metal centres adopt linear geometries with M-C(carbene) bond lengths in the range of 207-210 pm characteristic of a single bond.

Item Type: Article
Related URLs:
Keywords: olefin metathesis, catalysts, ligands
Subjects: Q Science
Q Science > QD Chemistry
Divisions: University Structure - Pre August 2011 > School of Chemistry
ePrint ID: 18949
Date Deposited: 20 Dec 2005
Last Modified: 27 Mar 2014 18:08
URI: http://eprints.soton.ac.uk/id/eprint/18949

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