Fluoride crystal structures. Part XIV. Antimony trifluoride: a redetermination

Abstract

Crystals of antimony trifluoride are orthorhombic, space group C2cm, a= 4·95, b= 7·46, c= 7·26 Å, as previously reported. The structure was refined by three-dimensional least-squares methods, to R 0·072 for 370 reflections. Each antimony atom has three close fluorine neighbours with mean Sb–F distances 1·92 Å. These SbF₃ units are then linked through three fluorine bridges (Sb⋯F 2·61 Å) to form a three-dimensional network, with a much distorted octahedral co-ordination around the antimony atom.