Sulfuryl chloride fluoride

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Sulfuryl chloride fluoride
Structure of sulfuryl chloride fluoride
Sulfuryl-chloride-fluoride-from-xtal-3D-balls.png Sulfuryl-chloride-fluoride-from-xtal-3D-vdW.png
CAS number 13637-84-8 N
PubChem 26159
ChemSpider 24370 YesY
ChEBI CHEBI:39445 YesY
RTECS number WT4900000
Jmol-3D images Image 1
Molecular formula ClFO2S
Molar mass 118.52 g/mol
Appearance colourless gas
Density 1.623 g/cm3 at 0 °C
Melting point −124.7 °C (−192.5 °F; 148.5 K)
Boiling point 7.1 °C (44.8 °F; 280.2 K)
Solubility in water hydrolyses
Solubility in other solvents SO2 and ether
MSDS "External MSDS"
R-phrases R14 R34[1]
S-phrases S24/25 S26 S27 S28 S36/37/39 S38 S45[1]
Main hazards moderately toxic, corrosive
Related compounds
Related compounds SO2Cl2,
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N (verify) (what is: YesY/N?)
Infobox references

Sulfuryl chloride fluoride is the chemical compound with the formula SO2ClF. It is employed as a solvent for highly oxidizing compounds.

The laboratory-scale synthesis begins with the preparation of potassium fluorosulfite:[2]

SO2 + KF → KSO2F

This salt is then chlorinated to give sulfuryl chloride fluoride[3]

KSO2F + Cl2 → SO2ClF + KCl

Further heating (180 °C) of potassium fluorosulfite with the sulfuryl chloride fluoride gives sulfuryl fluoride.

Alternatively, sulfuryl chloride fluoride can be prepared without using gases as starting materials by treating sulfuryl chloride with ammonium fluoride or potassium fluoride in trifluoroacetic acid.[4]

SO2Cl2 + NH4F → SO2ClF + NH4Cl


  1. ^ a b[dead link]
  2. ^ Seel, F.; Czerepinski, Ralph G.; Cady, George H. (1967). "Potassium Fluorosulfite". Inorg. Synth. Inorganic Syntheses 9: 113–115. doi:10.1002/9780470132401.ch29. ISBN 978-0-470-13240-1. 
  3. ^ Seel, F.; Duncan, Leonard C.; Czerepinski, Ralph G.; Cady, George H. (1967). "Sulfuryl Chloride Fluoride and Sufluryl Fluoride". Inorg. Synth. Inorganic Syntheses 9: 111–113. doi:10.1002/9780470132401.ch28. ISBN 978-0-470-13240-1. 
  4. ^ Prakash Reddy, V (1992). "A convenient preparation of sulfuryl chloride fluoride". Journal of Fluorine Chemistry 56 (2): 195–197. doi:10.1016/S0022-1139(00)81102-1.