Disulfuryl fluoride is an inorganic compound of sulfur, fluorine, and oxygen with the chemical formula . This is the anhydride of fluorosulfuric acid.
Synthesis Autoclave heating of sulfur trioxide and calcium fluoride:
The compound can be produced by the reaction of and in deuterated chloroform at −100 °C:
It can also be produced in the reaction of iodine pentafluoride and sulfur trioxide.
Other methods are also known.
Physical properties Pyrosulfuryl difluoride forms a colorless liquid that smokes slightly in the air. It causes severe suffocation and resembles phosgene in its action.
Chemical properties When heated, the compound is stable to a temperature of 200 °C.
It is slowly hydrolyzed by water:
It reacts with tetraethyl titanate to produce diethoxytitanium difluorosulfonate:
See also Sulfuryl fluoride Disulfuryl chloride Disulfuryl chloride fluoride Trisulfuryl fluoride Peroxydisulfuryl difluoride
References