Acta Cryst. (2011). E67, m1328-m1329  [ doi:10.1107/S1600536811035732 ]

A second polymorph of chlorido(hydroxydiphenylphosphane)gold(I)

S. V. Sithole, R. J. Staples and W. E. Van Zyl

Abstract: The title complex, [AuCl{(C₆H₅)₂P(OH)-P}] or [AuCl(C₁₂H₁₁OP)], contains two independent molecules in the asymmetric unit and is a polymorph of a previously reported structure [Hollatz et al. (1999) J. Chem. Soc. Dalton Trans. pp. 111-114]. The crystal structure exhibits intermolecular AuAu interactions with alternate distances of 3.0112 (3) Å and 3.0375 (2) Å. The Cl-Au-P bond angle varies between different molecular units, depending on the degree of influence of the intramolecular the O-HCl hydrogen bond; the angle thus varies between negligible distortion from linearity at 179.23 (3)° and more significant distortion at 170.39 (4)°, which differs from the previously reported polymorph in which both these angles are approximately 170°. The Au-Cl [2.3366 (9) and 2.3131 (10)Å] and Au-P [2.2304 (10) and 2.2254 (10) Å] bond lengths vary slightly between the two independent molecules but overall, the bond lengths are in good agreement with those in the previously reported polymorph.

Online 14 September 2011

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