Peroxydisulfuryl fluoride

Peroxydisulfuryl fluoride is usually synthesized by catalytic fluorination of sulfur trioxide.However, pure peroxydisulfuryl fluoride can be obtained in a relatively simple way by the reaction between fluorosulfuric acid and dioxygenyl hexafluoroarsenate. The method lends itself to preparation of smaller quantities (a few grams) of peroxydisulfuryl fluoride. The reaction can be carried out in an openable nickel or Monel pressure vessel, into which dioxygenyl hexafluoroarsenate is transferred from a photochemical reactor (see the preceding synthesis of dioxygenyl hexafluoroarsenate) or, more simply, in the same Pyrex-glass flask in which dioxygenyl hexafluoroarsenate has previously been synthesized. 

Peroxydisulfuryl fluoride is a colorless liquid (bp 67.1°C). It reacts wit i water to give fluorosulfate ions and oxygen. It can be stored in a glass container equipped with a Teflon-needle glass valve. See also ref. 1. 

Peroxydisulfuryl difluoride, S OgF, reacts with COFj, in the presence of potassium fluoride, at room temperature according to [1754a] ... 

Peroxydisulfuryl difluoride can be prepared by reaction of fluorine with an excess of sulfur trioxide at about 250° and by the combination of fluorine fluorosulfate with sulfur trioxide. The catalytic fluorination of sulfur trioxide vapor by fluorine in the presence of a heated catalyst of copper ribbon coated with silver(II) fluoride provides a good method for the preparation of a product which can be purified easily. 

Methylbromoarsines, synthesis 26 Vanadium(III) fluoride, synthesis 27 Sulfur(IV) fluoride, synthesis 33 Peroxydisulfuryl difluoride, synthesis 34 Trichloro(tripyridine)chromium(III), synthesis 36 Tris(3-bromoacetylacetonato)chromium(III), synthesis 37 Trichloro(tripyridine)molybdenum(III), synthesis 39 Uranyl chloride 1-hydrate, synthesis 41 Rhenium(III) iodide, synthesis 50 Potassium hexachlororhenate(IV) and potassium hexa-bromorhenate(IV), synthesis 51 Iron-labeled cyclopentadienyl iron complexes, synthesis 54 Inner complexes of cobalt(III) with diethylenetriamine, synthesis 56... 

F2SO2 Sulfuryl fluoride, 6 158 F2S2O6 Peroxydisulfuryl difluoride, 7 124... 

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