text: The molecule is tetrahedral with C symmetry. The S-O distance is 140.5 pm, S-F is 153.0 pm.  As predicted by VSEPR, the O-S-O angle is more open than the F-S-F angle, 124° and 97°, respectively.
  One synthesis begins with the preparation of potassium fluorosulfite:
  :SO  +  KF  →  KSOF
  This salt is then chlorinated to give sulfuryl chloride fluoride:
  :KSOF  +  Cl  →  SOClF  + KCl
  Further heating at 180 °C of  potassium fluorosulfite with the sulfuryl chloride fluoride gives the desired product:
  :SOClF  +  KSOF  →  SOF  +  KCl   + SO
  Heating metal fluorosulfonate salts also gives this molecule:
  :Ba(OSOF)  →  BaSO  +  SOF
  It can be prepared by direct reaction of fluorine with sulfur dioxide:
  :SO  +  F  →  SOF
  On a laboratory scale, sulfuryl fluoride has been conveniently prepared from 1,1'-sulfonyldiimidazole, in the presence of potassium fluoride and acid.
  Sulfuryl fluoride is unreactive toward molten sodium metal.  Similarly it is slow to hydrolyze, but eventually converts to sulfur trioxide.
  Sulfuryl fluoride gas is a precursor to fluorosulfates and sulfamoyl fluorides:
  :SOF  +  ROH  +  base  →   ROSOF  +  HbaseF