Selenoyl fluoride is the inorganic compound with the formula . It is a colorless, corrosive gas.
Structure
The molecule has a distorted tetrahedral shape with the following bond angles: O-Se-O = 126.2°, O-Se-F = 108.0°. and F-Se-F = 94.1°.Wai-Kee Li, Gong-du Zhou, Thomas C. W. Mak Advanced structural inorganic chemistry page 651 2008 The Se-F bond length is 1.685 Å and the selenium to oxygen distancesare 1.575 Å.Kolbjørn Hagen, Virginia R. Cross and Kenneth Hedberg "The molecular structure of selenonyl fluoride, SeO2F2, and sulfuryl fluoride, SO2F2, as determined by gas-phase electron diffraction" Journal of Molecular Structure 1978 volume 44 issue 2 page 187
Formation Selenoyl fluoride can be produced by the action of warm fluorosulfonic acid on selenic acid:
Barium selenate can be used in place of the selenic acid.Advanced Inorganic Chemistry A Comprehensive Text Cotton and Wilkinson Treatment of SeO3 with SeF4 give this gas along with other oxyfluorides.
Reactions Selenoyl fluoride is more reactive than its lighter homologue sulfuryl fluoride. It hydrolyzes more easily. It is a strong oxidant. It reacts violently with ammonia, for example. It attacks glass.
Selenoyl fluoride reacte with xenon difluoride to give FXeOSeF5.
References