The preparation and crystal structure of the 1 : 2 adduct of phosphorus trifluoride oxide and antimony pentafluoride

Abstract

The structure of the title adduct has been determined by the heavy-atom method from 2 140 reflections, measured with a diffractometer, and refined by full-matrix least-squares methods to R 0.041. Crystals are monoclinic, space group P2₁/c, with unit-cell dimensions a= 7.318(2), b= 14.725(4), c= 10.377(10)Å, β= 97.73(5)°, and Z= 4. The solid adduct exists as a monomer, with a tetrahedrally co-ordinated phosphorus atom linked through a bridging oxygen atom to complete the octahedral co-ordination of one antimony atom in the Sb₂F₁₀ unit.