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Silver(I) and mercury(II) complexes of meta- and para-xylyl linked bis(imidazol-2-ylidenes) |
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| Authors: | Murray V Baker David H Brown Rosenani A Haque Brian W Skelton Allan H White |
| Institution: | 1. Chemistry M313, School of Biomedical, Biomolecular and Chemical Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA, 6009, Australia 2. Department of Applied Chemistry, Nanochemistry Research Institute, Curtin University of Technology, Kent St, Bentley, WA, 6102, Australia 3. School of Chemical Sciences, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia |
| Abstract: | Mononuclear silver and mercury complexes bearing bis-N-heterocyclic carbene (NHC) ligands with linear coordination modes have been prepared and structurally characterised. The complexes form metallocyclic structures that display rigid solution behaviour. A larger metallocycle of the form L2Ag2]2+ where L = para-bis(N-methylimidazolylidene)xylylene] has been isolated from the reaction of para-xylylene-bis(N-methylimidazolium) chloride and Ag2O. Reaction of silver- and mercury-NHC complexes with Pd(NCCH3)2Cl2 affords palladium-NHC complexes via NHC-transfer reactions, the mercury case being only the second example of a NHC-transfer reaction using a mercury-NHC complex. |
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