Thionyl fluoride is the
inorganic compound with the
formula SOF2. This colourless gas is mainly of theoretical interest, but it is a product of the degradation of
sulfur hexafluoride, an insulator in electrical equipment. The molecule adopts a distorted pyramidal structure, with C
s symmetry. The S-O and S-F distances are 1.42 and 1.58
Å, respectively. The O-S-F and F-S-F angles are 106.2 and 92.2°, respectively.
Thionyl chloride and
thionyl bromide have similar structures, although these compounds are liquid at room temperature. Mixed halides are also known, such as SOClF, thionyl chloride fluoride.