Acta Cryst. (2008). E64, m45  [ doi:10.1107/S1600536807063386 ]

Substitutional disorder in a hypervalent diorganotin(IV) dihalide

A. Rotar, R. A. Varga and C. Silvestru

Abstract: The structure of bromidochloridobis[2-(dimethylaminomethyl)phenyl]tin(IV), [SnBr_0.65Cl_1.35(C₉H₁₂N)₂], contains two 2-(Me₂NCH₂)C₆H₄ units bonded to a Sn atom which lies on a twofold axis. The compound exhibits substitutional disorder of the halide atoms bonded to the Sn, with 1.35 occupancy for Cl and 0.65 for Br; it is isomorphous with the corresponding dichloride. The Sn atom is hexacoordinated with a (C,N)₂SnX₂ (X = Cl/Br) distorted octahedral core as a result of the strong intramolecular NSn coordination trans to the Sn-X bonds (N1-Sn1-X1 = 165.8°). As a result of the intermolecular contacts, viz. HX and Hbenzene interactions, the molecules are arranged in a three-dimensional supramolecular manner in the crystal structure.

Online 6 December 2007

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