Fluorine fluorosulfate
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| Properties | |
| F2O3S | |
| Molar mass | 118.05 g·mol−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).
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Fluorine fluorosulfate is an inorganic compound of fluorine, oxygen, and sulfur with the chemical formula F2O3S.
Synthesis
The compound can be prepared by the reaction of sulfur trioxide and fluorine at a temperature of 200 °C:[1]
- SO3 + F2 → FOSO2F
Also, a reaction of peroxydisulfuryl difluoride with fluorine.[2]
Physical characteristics
The compound is a strong oxidizing agent that is also potentially explosive.[3]
At 200 °C the compound decomposes without explosion.[4]
Chemical properties
The compound reacts with bases to form the fluorosulfonate anion, the fluoride ion, water, and oxygen:[5]
- FSO3F + 2 H− → SO3F− + F− + H2O + 1/2O2
It reacts with potassium iodide to form potassium fluorosulfonate, potassium fluoride, and iodine:[5]
- FSO3F + 2 KI → KSO3F + KF + I2
Fluorine fluorosulfate reacts with SSF2, SeF4, AsF3, and MoF5 and also with SF4, Br2, and I2. All compounds react exothermically, and sometimes explosively, between 80–298 K.[6]
See also
References
- ^ Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3156. ISBN 978-0-412-30120-9. Retrieved 18 August 2025.
- ^ Advances in Inorganic Chemistry and Radiochemistry. Academic Press. 28 June 1974. p. 194. ISBN 978-0-08-057865-1. Retrieved 18 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. Retrieved 18 August 2025.
- ^ Bretherick, L. (27 October 2016). Bretherick's Handbook of Reactive Chemical Hazards. Elsevier. p. 1112. ISBN 978-1-4831-6250-8. Retrieved 18 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. Retrieved 18 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. Retrieved 18 August 2025.