Issue 27, 2007
From the journal:

Dalton Transactions

Synthesis and characterization of mixed-metal complexes of Ag/Cu and W/Mo and a complex of Ag with heterocyclic thione ligands†

Azizolla Beheshti,*a   William Clegg,*b   Sophie H. Dale,b   Reza Hyvadia  and  Farzanh Hussainia  

* Corresponding authors

a Department of Chemistry, Faculty of Sciences, Shahid Chamran University, Ahvaz, Iran
E-mail: beheshti_a@hotmail.com
Fax: +98 (0)611 333 7009
Tel: +98 (0)611 366 0018

b School of Natural Sciences (Chemistry), Newcastle University, Newcastle upon Tyne, UK
E-mail: w.clegg@ncl.ac.uk
Fax: +44 (0)191 222 6929
Tel: +44 (0)191 222 6649

Abstract

Reactions of AgI with salts of [WS4]2− or [MoS4]2− and with either imidazolidine-2-thione (Imt) or [1,3]diazepane-2-thione (Diap) give the complexes [WS4Ag2(Imt)2]n and [MS4Ag2(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.

Graphical abstract: Synthesis and characterization of mixed-metal complexes of Ag/Cu and W/Mo and a complex of Ag with heterocyclic thione ligands

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Article information

DOI
https://doi.org/10.1039/B702129A
Article type
Paper
Submitted
12 Feb 2007
Accepted
27 Apr 2007
First published
23 May 2007

Dalton Trans., 2007, 2949-2956

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Synthesis and characterization of mixed-metal complexes of Ag/Cu and W/Mo and a complex of Ag with heterocyclic thione ligands

A. Beheshti, W. Clegg, S. H. Dale, R. Hyvadi and F. Hussaini, Dalton Trans., 2007, 2949 DOI: 10.1039/B702129A

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