Fluoride crystal structures. Part XXII. Chloryl µ-fluoro-bis[pentafluoroantimonate(V)]

Abstract

The interaction of chlorine, chlorine trifluoride, and antimony pentafluoride produced coloured solutions. After these had been set aside in Pyrex glass apparatus for several months, colourless crystals separated, and some of these were shown by crystallographic analysis to be the title compound. Crystals are monoclinic, space group P2₁/n, Z= 4, a= 7·50(1), b= 10·20(2), c= 13·24(2)Å, β= 94·4(3)°. The structure was solved by the heavy-atom method and was refined by three-dimensional least-squares methods to R 0·076 for 971 reflections. Although the molecular geometry is consistent with the ionic formulation [ClO₂]+[Sb₂F₁₁]^– there is considerable interaction between the ions through fluorine bridging.