Sulfuryl chloride fluoride

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

Sulfuryl chloride fluoride

Names
IUPAC name Sulfuryl chloride fluoride
Other names Sulfuryl fluoride chloride
Identifiers
CAS Number	13637-84-8^N
3D model (JSmol)	Interactive image
ChEBI	CHEBI:39445^Y
ChemSpider	24370^Y
ECHA InfoCard	100.033.737
PubChem CID	26159
RTECS number	WT4900000
CompTox Dashboard (EPA)	DTXSID0065567
InChI InChI=1S/ClFO2S/c1-5(2,3)4^Y Key: IXPAAHZTOUOJJM-UHFFFAOYSA-N^Y InChI=1/ClFO2S/c1-5(2,3)4 Key: IXPAAHZTOUOJJM-UHFFFAOYAK
SMILES ClS(F)(=O)=O
Properties
Chemical formula	ClFO2S
Molar mass	118.52 g/mol
Appearance	colourless gas
Density	1.623 g/cm^3 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
Structure
Coordination geometry	tetrahedral
Hazards
Main hazards	moderately toxic, corrosive
Safety data sheet	"External MSDS"
R-phrases (outdated)	R14 R34[1]
S-phrases (outdated)	S24/25 S26 S27 S28 S36/37/39 S38 S45[1]
Related compounds
Related compounds	SO2Cl2, SO2F2 ClSO2(NCO)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is ^YN ?)
Infobox references

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

References

1. "Sulfuryl chloride fluoride, distilled, 99%". Archived from the original on November 17, 2015. Retrieved February 19, 2013.
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.