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Lookup NU author(s): Professor William Clegg, Dr Sophie Dale
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Reactions of AgI with salts of [WS4]2- or [MoS 4]2- and with either imidazolidine-2-thione (Imt) or [1,3]diazepane-2-thione (Diap) give the complexes [WS4Ag 2(Imt)2]n and [MS4Ag 2(Diap)4] [M = W or Mo]; in the case of Diap, corresponding Cu complexes can be obtained with CuCl instead of AgI. Decomposition of the Ag-Diap complexes during attempted recrystallisation leads to the polymeric complex [AgI(Diap)]n. The monomeric mixed-metal Diap complexes contain edge-sharing WS4 and AgS4 tetrahedra, the Diap ligands being terminally bonded to Ag through sulfur. The mixed-metal W-Ag-Imt complex is a chain polymer with two different environments for the WS4 unit and three different coordination environments for Ag, one of which is an unprecedented AgS5 square-based pyramid; Imt ligands are terminally coordinated to Ag. [AgI(Diap)]n has a complex polymeric chain structure with three different distorted tetrahedral environments for Ag, direct Ag-Ag bonding, both bridging and terminal I, and all Diap ligands bridging pairs of Ag atoms. All the crystal structures feature N-H⋯S or N-H⋯I hydrogen bonding. The complexes have also been characterised by infrared, UV-Vis and 1H and 13C NMR spectroscopy. © The Royal Society of Chemistry.
Author(s): Beheshti A, Clegg W, Dale SH, Hyvadi R, Hussaini F
Publication type: Article
Publication status: Published
Journal: Dalton Transactions
Year: 2007
Issue: 27
Pages: 2949-2956
Print publication date: 01/01/2007
Date deposited: 05/07/2010
ISSN (print): 1477-9226
ISSN (electronic): 1477-9234
Publisher: Royal Society of Chemistry
URL: http://dx.doi.org/10.1039/b702129a
DOI: 10.1039/b702129a
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