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A second tetragonal polymorph of bis(tetra-n-butylammonium) tetrakis[chloro(μ3-sulfido)-copper(I)]molybdate(VI)

Lookup NU author(s): Dr Neil Brooks, Emeritus Professor Bill Clegg

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Abstract

The title compound, bis(tetra-n-butylammonium) tetrachlorotetra- μ3-sulfidotetracopper(I)molybdenum(VI), (C16H 36N)2-[MoS4(CuCl)4], has been obtained in a second polymorphic form. The anion, in which four of the six S⋯S edges of the central MoS4 tetrahedron are bridged by CuCl neutral molecular units to give a planar pentanuclear MoCu4 frame-work, is disordered on a crystallographic fourfold rotation axis, requiring equal occupancy of two sets of four positions for the S atoms. There is additional disorder as a result of 8.2 (2)% substitution of Cl by Br, arising from tetra-n-butylammonium bromide used in the synthesis. Copper has distorted trigonal planar coordination, involving two μ3-S atoms and a terminal halogen atom. The two independent cations lie on positions of symmetry 4̄. © 2004 International Union of Crystallography Printed in Great Britain - all rights reserved.


Publication metadata

Author(s): Brooks NR, Clegg W, Sadr MH, Esm-Hosseini M, Yavari R

Publication type: Article

Publication status: Published

Journal: Acta Crystallographica Section E: Structure Reports Online

Year: 2004

Volume: 60

Issue: 2

Pages: m204-m206

Print publication date: 01/02/2004

ISSN (electronic): 1600-5368

Publisher: Wiley-Blackwell

URL: http://dx.doi.org/10.1107/S1600536804001175

DOI: 10.1107/S1600536804001175


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