Acta Cryst. (2004). E60, m1952-m1954  [ doi:10.1107/S1600536804030582 ]

Bis(tetra-n-butylammonium) tetrakis[chloro(₃-sulfido)copper(I)]tungstate(VI): a second polymorph

M. Hossaini Sadr, S. M. Seyed Ahmadian, N. R. Brooks and W. Clegg

Abstract: The title compound, (C₁₆H₃₆N)₂[WS₄(CuCl)₄], has been obtained in a second polymorphic form. The anion, in which four of the six SS edges of the central WS₄ tetrahedron are bridged by CuCl neutral molecular units to give a planar pentanuclear WCu₄ framework, is disordered on a crystallographic fourfold rotation axis, requiring equal occupancy of two sets of four positions for the S atoms. Copper has distorted trigonal planar coordination, involving two ₃-S atoms and a terminal Cl atom. The two independent cations lie on positions of symmetry .

Online 27 November 2004

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