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Article type: Research Article
Authors: Gary Southerington, I. | Begley, Michael J. | Bryan Sowerby, D.
Affiliations: Department of chemistry, University of Nottingham, Nottingham NG7 2RD, UK
Note: [] Corresponding author.
Abstract: Diphenylarsenic (III) chloride can be oxidized with t-butyl hydroperoxide to a compound with the stoichiometry AsPh2OCl, which, on the basis of mass and IR spectroscopy, is thought to be a cyclic oligomer (AsPh2OCl)n where n = 3 or 4 although an AsPh2Cl2O (AsPh2O)2 OasPh2Cl2 tetramer containing a central As2O2 ring cannot be ruled out. Crystallization in the presence of traces of water yields a monohydrate, which x-ray diffraction shows is the salt [AsPh2(OH)2]Cl. (Space group P21/c, a = 8.617 (3), b = 13.890 (5), c = 11.146(3) Å, β = 107.69 (2)°; Z = 4, Dc = 1.56 g cm−3, 1842 observed reflections, final R = 0.033). The cation has slightly distorted tetrahedral geometry, and strong hydrogen bonds are formed between the chloride anion and hydroxo groups from two symmetry-related cations.
DOI: 10.1080/13583149512331338335
Journal: Main Group Chemistry, vol. 1, no. 1, pp. 139-143, 1995
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