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Silver(I) and mercury(II) complexes of meta- and para-xylyl linked bis(imidazol-2-ylidenes)

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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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Acknowledgements

We thank the Australian Research Council for a Discovery Grant (to M.V.B. and A.H.W.), the Universiti Sains Malaysia for a postgraduate research scholarship (to R.A.H.) and Curtin University of Technology for a Curtin Research and Teaching Fellowship (to D.H.B.).

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Authors and Affiliations

  1. Chemistry M313, School of Biomedical, Biomolecular and Chemical Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA, 6009, Australia

    Murray V. Baker, David H. Brown, Rosenani A. Haque, Brian W. Skelton & Allan H. White

  2. Department of Applied Chemistry, Nanochemistry Research Institute, Curtin University of Technology, Kent St, Bentley, WA, 6102, Australia

    David H. Brown

  3. School of Chemical Sciences, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia

    Rosenani A. Haque

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  1. Murray V. Baker
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Correspondence to Murray V. Baker.

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Dedicated to Jack Harrowfield on his retirement. An inimitable educator, scientist, colleague, friend, writer of mischievous anagrams … and still a good bloke.

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Baker, M.V., Brown, D.H., Haque, R.A. et al. Silver(I) and mercury(II) complexes of meta- and para-xylyl linked bis(imidazol-2-ylidenes). J Incl Phenom Macrocycl Chem 65, 97–109 (2009). https://doi.org/10.1007/s10847-009-9633-7

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  • DOI: https://doi.org/10.1007/s10847-009-9633-7

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