Crystal structure of a one-dimensional coordination polymer of tin(IV) bromide with 1,4-dithiane

Abstract

{The title compound, [SnBr4(C4H8S2)] {systematic name: catenapoly[[}tetrabromidotin(IV)]-mu-1,4-dithiane-kappa S-2:S']}, represents the first 1,4-dithiane complex with tin as coordination centre. The asymmetric unit consist of half a formula unit with the tin(IV) atom at the centre of symmetry at 0,0,1/2 (Wyckoff symbol b) and a centrosymmetric 1,4-dithiane molecule with the centre of symmetry in 1/2,0,1 (Wyckoff symbol c). The tin(IV) atom is coordinated in a distorted octahedral manner by the four bromine atoms and two sulfur atoms of two 1,4-dithiane molecules in a trans-position. Sn Bro [mean value: 2.561 (5) angstrom] and Sn-S distances [2.6546 (6) angstrom] are in the typical range for octahedrally coordinated tin(IV) atoms and the dithiane molecule adopts a chair conformation. The one-dimensional polymeric chains propagate along the [101] direction with weak intermolecular Br center dot center dot center dot Br [3.5724 (4) angstrom] between parallel chains and weak Br center dot center dot center dot H interactions [2.944-2.993 angstrom] within the chains.}