Coordination complexes of tin. II. Investigations into the crystal chemistry of IPrSnCl3 · 2DMSO

Abstract

Both the fac- and mer-isomer of IPrSnCl3 · 2DMSO were isolated under slightly different reaction conditions. The conformations of these octahedral complexes with a cis-arrangement of the two solvent molecules were confirmed by single crystal X-ray diffraction experiments. In both cases, the asymmetric unit contains two molecules. While the fac-isomer crystallizes in the centrosymmetric space group P21/n with a = 14.638(3) Å, b = 15.073(3) Å, c = 15.916(3) Å, β = 110.86°, the merisomer crystallizes in the acentric space group P21 with a = 7.150(2) Å, b = 15.155(3) Å, c = 14.738(3) Å, α = 93.43(3)°. In both isomers the bonds trans to the isopropyl groups are shortened.