Acta Cryst. (2003). E59, m876-m877  [ doi:10.1107/S1600536803019421 ]

Bis[1,1,3,3-tetramethyl-1,3-bis(dichloroacetato)distannoxane]

M. M. Amini, S. H. Abadi, M. Mirzaee, S.-Y. Yang and S. W. Ng

Abstract: In centrosymmetric octamethyl-1²C,2²C,3²C,4²C-tetrakis--dichloroacetato-1:2²O,O';2:3²O,O';3:4²O,O';1:4-²O-bis-₃-oxo-1:2:3:³O;1:3:4³O-tetratin(IV), [[(CH₃)₂SnO₂CCHCl₂]₂O]₂, two Sn atoms are six-coordinate in a C₂SnO₄ skew-trapezoidal bipyramidal geometry [C-Sn-C 145.7  (4)°]. The other two Sn atoms are five-coordinate [C-Sn-C 154.3  (4)°], but the geometry is better regarded as a trans-C₂SnO₄ octahedron owing to a long intermolecular Sn-O bond [Sn-O 2.846  (6)  Å], which links the molecules into a linear chain.

Online 11 September 2003

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