Crystal structure of trichlorosulphonium(IV) tetrachloroiodate(III)

Abstract

The structure of the title compound has been determined by the heavy-atom method from 2 012 reflections, measured with a diffractometer, and refined by full-matrix least-squares methods to R 0.060. Crystals are mono-clinic, space group P2₁/c, with a= 10.42(1), b= 15.20(1), c= 8.27(1)Å, and β= 108.6(2)°. The cation has a pyramidal geometry while that of the anion is square planar, but interionic intetztions lead to a distortion of the square plane, and to additional contacts to the sulphur atom. This gives a greatly distorted octahedral arrangement around sulphur with three S–Cl bonds averaging 1.988 Å and three S ⋯ Cl contacts averaging 3.115 Å.