Iodine(I) fluorosulfonate

Iodine(I) fluorosulfonate

Names
Other names Iodine(I) fluorosulfate, iodine fluorosulfate
Identifiers
CAS Number	13537-34-3  Y
3D model (JSmol)	Interactive image
ChemSpider	74012740  N
PubChem CID	13267199
InChI InChI=1S/FIO3S/c1-6(3,4)5-2 Key: SQEZHUFQILAKPK-UHFFFAOYSA-N
SMILES O=S(=O)(OI)F
Properties
Chemical formula	FIO3S
Molar mass	225.96 g·mol−1
Appearance	black crystals
Melting point	51.5 °C
Solubility in water	reacts with water
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Iodine(I) fluorosulfonate is an inorganic compound of iodine, sulfur, fluorine, and oxygen with the chemical formula ISO₃F. This is a monovalent compound of iodine from the group of fluorosulfonates. ^{[1] [2]}

Synthesis

Like the other halofluorosulfonates, iodine(I) fluorosulfonate can be obtained from iodine and peroxydisulfuryl difluoride: ^{[3] [4]}

I₂ + S₂O₆F₂ → 2ISO₃F

Chemical properties

Reaction with iodine at 85 °C can convert iodine(I) fluorosulfate to triiodine fluorosulfonate.

I₂ + ISO₃F → I₃SO₃F

When dissolved in carbon tetrachloride, iodine monochloride, peroxydisulfuryl difluoride, and phosgene are formed: ^{[5] [6]}

2ISO₃F + CCl₄ → 2ICl + S₂O₆F₂ + COCl₂

However, carbon dioxide can also be produced instead of phosgene:

4ISO₃F + CCl₄ → 4 ICl + 2 S₂O₆F₂ + CO₂

Physical properties

The compound forms black crystals. ^[4]

See also

• Bromine fluorosulfate
• Fluorine fluorosulfate
• Chlorine fluorosulfate
• Triiodine fluorosulfate

References

1. Shack, Carl J.; Christe, Karl O. (1 May 1982). "Iodine fluorosulfate reactions with fluorocarbons" . Journal of Fluorine Chemistry. 20 (3): 283–290. Bibcode:1982JFluC..20..283S. doi:10.1016/S0022-1139(00)82219-8. ISSN   0022-1139 . Retrieved 14 August 2025.
2. Ameduri, B. (18 September 1997). Organofluorine Chemistry: Fluorinated Alkenes and Reactive Intermediates. Springer Science & Business Media. p. 68. ISBN   978-3-540-63171-2 . Retrieved 14 August 2025.
3. Cotton, F. Albert (17 September 2009). Progress in Inorganic Chemistry, Volume 7. John Wiley & Sons. p. 65. ISBN   978-0-470-16658-1 . Retrieved 14 August 2025.
4. Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. ISBN   978-0-412-30120-9 . Retrieved 14 August 2025.
5. Aubke, Friedhelm; Cady, George H. (1 March 1965). "Iodine Fluorosulfates" . Inorganic Chemistry . 4 (3): 269–273. doi:10.1021/ic50025a001. ISSN   0020-1669 . Retrieved 14 August 2025.
6. Kasumov, T. M.; Koz'min, A. S.; Zefirov, N. S. (1997). "Chemistry of inorganic sulfonates and sulfates of polyvalent iodine". Russian Chemical Reviews . 66 (10): 843–857. Bibcode:1997RuCRv..66..843K. doi:10.1070/RC1997v066n10ABEH000282 . Retrieved 14 August 2025.