Acta Cryst. (2007). E63, m2075  [ doi:10.1107/S1600536807031911 ]

(P)-Tetra-₃-iodido-tetrakis[(cyclohexyldiphenylphosphine-P)silver(I)]

J. F. Young and G. P. A. Yap

Abstract: The title compound, [Ag₄I₄(C₁₈H₂₁P)₄], has a tetrameric structure, with the Ag and I atoms alternating in a distorted cubane-like AgI core and with cyclohexyldiphenylphosphine ligands capping the Ag corners. Each face is distorted, such that the average AgAg atomic separation is shorter than the average II atomic separation by about 1 Å. Two symmetry-unique but structurally similar tetramers of the same enantiomer are each located on a twofold rotation axis, which can be assigned the same helicity, suggesting spontaneous resolution. Three phenyl groups are each disordered over two positions; the site occupancy ratios are between ca 2:1 and 4:1.

Online 5 July 2007

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