Sulfuryl chloride fluoride

{{#if:118.52 g/molcolourless gasClFO₂S1.623 g/cm³ at 0 °C−124.7 °C7.1 °Chydrolysesother solventsSO₂|! style="background: #F8EABA; text-align: center;" colspan="2" | Properties

Sulfuryl chloride fluoride
Structure of sulfuryl chloride fluoride	Ball-and-stick model of sulfuryl chloride fluoride
IUPAC name Sulfuryl chloride fluoride
Other names Sulfuryl fluoride chloride
Identifiers
CAS number	13637-84-8 7pxN
PubChem	26159
ChemSpider	24370 7pxY
ChEBI	CHEBI:39445 7pxY
RTECS number	WT4900000
Jmol-3D images	Image 1
SMILES ClS(F)(=O)=O <p><p style="word-wrap: break-word;">
InChI InChI=1S/ClFO2S/c1-5(2,3)4 7pxY Key: IXPAAHZTOUOJJM-UHFFFAOYSA-N 7pxY InChI=1/ClFO2S/c1-5(2,3)4 Key: IXPAAHZTOUOJJM-UHFFFAOYAK
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
Boiling point	7.1 °C
Solubility in water	hydrolyses
Solubility in other solvents	SO2
Structure
Coordination geometry	tetrahedral
Hazards
R-phrases	14-23/24/25-34
S-phrases	26-27-28-36/37/39-45
Main hazards	toxic
Related compounds
Related compounds	SO2Cl2, SO2F2
14pxN (verify) (what is: 10pxY/10pxN?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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:

SO₂ + KF → KSO₂F

This salt is then chlorinated to give sulfuryl chloride fluoride

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.

SO₂Cl₂ + NH₄F → SO₂ClF + NH₄Cl

References

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