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Lookup NU author(s): Emeritus Professor Bill Clegg
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Three new copper(I) complexes, [PPh4][WO2S2(CuPPh3)] (1), [PPh4]2[WO2S2(CuNCS)] (2), and [Et4N]2[WS4(CuNCSe)4] (3), have been prepared and characterised. The [WO2S2(CuPPh3)]- anion in 1 represents the first example of copper coordination to the [WO2S2]2- moiety that has been characterised by X-ray crystallography, in contrast to numerous studies involving [WOS3]2- and [WS4]2-. The dithio- and tetrathiotungstate groups in 1 and 3 act as bidentate ligands through two sulphur atoms chelating copper atoms. This is consistent with the infrared spectra, which exhibit low-frequency W-Sb stretching bands. There is no coordination of oxygen atoms to copper. The copper atom in 1 has trigonal coordination with triphenylphosphine as the third ligand. In 3 the selenocyanate ligands function as bridges, with nitrogen coordinated to one copper atom and selenium to another; pairs of copper atoms are linked by two of these bridges across an inversion centre, to give a two-dimensional polymeric network anion. © 2001 Published by Elsevier Science B.V.
Author(s): Beheshti A, Clegg W, Fallah H
Publication type: Article
Publication status: Published
Journal: Inorganica Chimica Acta
ISSN (print): 0020-1693
ISSN (electronic): 1873-3255
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