Fluorine fluorosulfate Identifiers ChemSpider InChI=1S/F2O3S/c1-5-6(2,3)4
Key: NTZQXTIIJGXIMQ-UHFFFAOYSA-N
Properties F 2 O 3 S Molar mass −1 Appearance colorless gas Density 1.7844 g/cm3 Melting point −158.5 °C Boiling point −31.3 °C reacts with water Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
Chemical compound
Fluorine fluorosulfate is an inorganic compound of fluorine, oxygen, and sulfur with the chemical formulaF2 O3 S .
The compound can be prepared by the reaction ofsulfur trioxide and fluorine at a temperature of 200 °C:[ 1]
SO3 + F2 → FOSO2 F Also, a reaction ofperoxydisulfuryl difluoride with fluorine.[ 2]
Physical characteristics [ edit ] The compound is a strongoxidizing agent that is also potentially explosive.[ 3]
At 200 °C the compound decomposes without explosion.[ 4]
Chemical properties [ edit ] The compound reacts with bases to form thefluorosulfonate anion, thefluoride ion , water, and oxygen:[ 5]
FSO3 F + 2 H− 3 F− − 2 O + 1/2 O2 It reacts withpotassium iodide to formpotassium fluorosulfonate ,potassium fluoride , and iodine:[ 5]
FSO3 F + 2 KI → KSO3 F + KF + I2 Fluorine fluorosulfate reacts withSSF2 ,SeF4 ,AsF3 , andMoF5 and also withSF4 ,Br2 , andI2 . All compounds react exothermically, and sometimes explosively, between 80–298 K.[ 6]
^ Macintyre, Jane E. (23 July 1992).Dictionary of Inorganic Compounds CRC Press . p. 3156.ISBN 978-0-412-30120-9 . Retrieved18 August 2025 . ^ Advances in Inorganic Chemistry and Radiochemistry Academic Press . 28 June 1974. p. 194.ISBN 978-0-08-057865-1 . Retrieved18 August 2025 .^ Mistry, F.; Willner, H.; Aubke, F. (1 September 1991)."Fluorine fluorosulfate revisited" Journal of Fluorine Chemistry .54 (1): 59.Bibcode :1991JFluC..54...59M .doi :10.1016/S0022-1139(00)83569-1 .ISSN 0022-1139 . Retrieved18 August 2025 . ^ Bretherick, L. (27 October 2016).Bretherick's Handbook of Reactive Chemical Hazards Elsevier . p. 1112.ISBN 978-1-4831-6250-8 . Retrieved18 August 2025 . ^a b Dudley, Frank B.; Cady, George H.; Eggers, David F. Jr. (1 January 1956)."Fluorine Fluorosulfonate" Journal of the American Chemical Society 78 (2):290– 292.Bibcode :1956JAChS..78..290D .doi :10.1021/ja01583a011 .ISSN 0002-7863 . Retrieved18 August 2025 . ^ Willner, H.; Mistry, F.; Aubke, F. (1 December 1992)."Selected reactions of fluorine-fluorosulfate, FOSO2F" Journal of Fluorine Chemistry .59 (3):333– 349.doi :10.1016/S0022-1139(00)80329-2 .ISSN 0022-1139 . Retrieved18 August 2025 .
Salts and covalent derivatives of the
fluoride ion
PF− 6 ,AsF− 6 ,SbF− 6 compoundsAlF2− 5 ,AlF3− 6 compoundschlorides, bromides, iodides SiF2− 6 ,GeF2− 6 compoundsOxyfluorides Organofluorides with transition metal, nitric acids bifluorides thionyl, phosphoryl,
