Two W/Cu/S clusters: tetraethylammonium bromidodi-μ

Authors: Wei, Zhenhong; You, Xiuli

Source: Acta Crystallographica Section C, Volume 67, Number 9, 15 September 2011 , pp. m307-m310(4)

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Abstract:

The reaction of (Et₄N)[Tp*WS₃] [Tp* = hydrogen tris(3,5-dimethylpyrazol-1-yl)borate] with one or two equivalents of CuBr afforded the [1 + 1] and [1 + 2] addition products (Et₄N)[Tp*WS(μ-S)₂(CuBr)] {or (C₈H₂₀N)[CuWBr(C₁₅H₂₂BN₆)S₃], (I)} and (Et₄N)[Tp*W(μ₃-S)(μ-S)₂(CuBr)₂] {or (C₈H₂₀N)[Cu₂WBr₂(C₁₅H₂₂BN₆)S₃], (II)}. The anion of (I) contains a [W(μ-S)₂Cu] core formed by the addition of one CuBr unit to the [Tp*WS₃] species. The anion of (II) has a butterfly-shaped [W(μ₃-S)(μ-S)₂Cu₂] core formed by the addition of two CuBr units to the [Tp*WS₃] species. The [Tp*WS₃] sections of each complex exhibit approximate C_3v point symmetry and have closely comparable geometry. In (II), both the anion and cation lie on a crystallographic mirror plane. The structure of (I) is noncentrosymmetric and polar.

Document Type: Research article

DOI: http://dx.doi.org/10.1107/S0108270111032586

Affiliations: 1: Department of Chemistry, Nanchang University, Nanchang 330031, People's Republic of China

Publication date: 2011-09-15