Toggle Main Menu Toggle Search

Open Access padlockePrints

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

Lookup NU author(s): Professor William Clegg, Dr Sophie Dale

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

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.


Publication metadata

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


Altmetrics

Altmetrics provided by Altmetric


Share