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A new family of sulfur-rich ligands based on the dmit system: synthesis and metal complexation of 4-4 '-covalently bridged bis(2-thioxo-1,3-dithiol-5-thiolato) units

Allen, D.W. and Berridge, R. and Bricklebank, N. and Cerrada, E. and Light, M.E. and Hursthouse, M.B. and Laguna, M. and Moreno, A. and Skabara, P.J. (2002) A new family of sulfur-rich ligands based on the dmit system: synthesis and metal complexation of 4-4 '-covalently bridged bis(2-thioxo-1,3-dithiol-5-thiolato) units. Journal of the Chemical Society, Dalton Transactions, 2002 (13). pp. 2654-2659. ISSN 0300-9246

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Abstract

The synthesis of a new series of sulfur-rich ligands is reported. These compounds, which are related to the dmit(2-) (2-thioxo-1,3-dithiol-4,5-dithiolato) structure, comprise two 2-thioxo-1,3-dithiol-5-thiolato units linked by a bridging unit at the 4-position of the heterocycle via a dithioether spacer unit. Complexation reactions have been carried out on a variety of metal centres; dialkyl tin and gold(I) derivatives have been isolated and fully characterised. The X-ray crystal structure of an octahedral Ni(II) complex, involving two coordinating pyridine molecules, is presented.