Fluoride crystal structures. Part 32. Triantimony nonachloride tetrafluoride oxide

Abstract

The title compound has been prepared as a minor component in the reaction of chlorine with antimony trifluoride. Its structure has been determined from X-ray diffractometer data and refined by full-matrix least-squares methods to R 0.067 for 3 379 reflections. Crystals are triclinic, space group P, a= 9.79, b= 13.24, c= 6.94 Å, α= 93.1, β= 105.3, γ= 91.1°. In the structure each antimony atom has octahedral co-ordination, two with three terminal chlorine atoms, two bridging fluorine atoms, and a bridging oxygen atom, and the third with three terminal chlorine atoms and two bridging and one terminal fluorine atoms. Two antimony atoms are linked together by a double bridge, consisting of an oxygen and a fluorine atom, and are also linked to the third antimony atom by single fluorine bridges.