Heterobimetallic aggregates of copper(I) with thio-tungstate and -molybdate. Cation effect in aggregation of MS4Cu4Cl4units, a crystallographic study
- 1 January 1991
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 11,p. 2875-2881
- https://doi.org/10.1039/dt9910002875
Abstract
Reaction of [MS4]2–(M = Mo or W) with CuCl in dichloromethane or acetonitrile gives a new set of bimetallic compounds isolated with various geometries for the same 1:4:4 M:S:Cu composition. Crystals of [NBu4]2[MoS4Cu4Cl4]1a are tetragonal, space group I/m, a= 13.343(5), c= 14.113(2)Å, Z= 2, R= 0.058. The crystal structure reveals discrete [MoS4Cu4Cl4]2– anions separated in the lattice by [NBu4]+ cations. The isostructural tungsten homologue 1b was isolated and characterized: space group I/m, tetragonal, a= 13.342(4), c= 14.106(5)Å. The structure of [PPh4][NPr4][MoS4Cu4Cl4]2 consists of a dimeric aggregate: monoclinic, space group P21/n, a= 9.962(8), b= 36.951(5), c= 13.114(3)Å, β= 105.71(6)°, R= 0.056. The salt [NPr4]2[WS4Cu4Cl4]3b is polymerized through linear chains. Crystals are triclinic, space group P, a= 10.283(1), b= 13.925(1), c= 15.245(1)Å, α= 110.32(1), β= 90.64(1), γ= 102.49(1)°, Z= 2, R= 0.031. The isostructural molybdenum compound 3a was also characterized: triclinic, a= 10.275, b= 13.961, c= 15.270 Å, α= 110.57, β= 90.70, γ= 102.30°. The arrangements of the mono-, di- and poly-meric aggregates in the lattice are discussed in terms of the size of the counter anion. For compounds 1b and 3a only the cell dimensions were determined.Keywords
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