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Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
Published on: November 22, 2016
μ(3)-Bromido-oxidotri-μ(3)-sulfido-tris-(triphenyl-phosphane-κP)-tri-copper(I)-tungsten(VI)
Abstract:
The title complex, [Cu(3)WBrOS(3)(C(18)H(15)P)(3)], a neutral heavily distorted cubane-like W/S/Cu cluster, was self-assembled from ammonium trithio-tungstate(VI), cuprous bromide and triphenyl-phosphane in N,N-dimethyl-formamide. The average Cu-Br, Cu-S and W-μ(3)-S bond lengths are 2.731 (2), 2.318 (2) and 2.256 (2) Å, respectively, in the distorted cubane-like skeleton. The W atom exhibits tetra-hedral geometry, formed by one terminal O atom and three μ(3)-S atoms; the W-O bond length is 1.728 (6) Å. Each Cu atom is coordinated by one P atom from a triphenyl-phosphane ligand, and two μ(3)-S and one μ(3)-Br atoms, forming a distorted tetra-hedral coordination geometry.
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