Triiodine fluorosulfate

Triiodine fluorosulfate

Names
Other names Iodine fluorosulfate iodide Triiodine fluorosulfonate
Identifiers
CAS Number	13537-36-5
3D model (JSmol)	Interactive image
InChI InChI=1S/FHO3S.I3/c1-5(2,3)4;1-3-2/h(H,2,3,4);/q;+1/p-1 Key: GBXBCNLVCWGHPO-UHFFFAOYSA-M
SMILES O=S(=O)([O-])F.I[I+]I
Properties
Chemical formula	FI3O3S
Molar mass	479.77 g·mol−1
Appearance	brown solid
Density	1.7844 g/cm3
Melting point	92 °C (198 °F; 365 K) [1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Triiodine fluorosulfate is an inorganic compound of iodine, fluorine, oxygen, and sulfur with the chemical formula I₃SO₃F.

Synthesis

Triiodine fluorosulfonate is obtained from iodine and iodine(I) fluorosulfonate at 85 °C. ^[2]

I₂ + ISO₃F → I₃SO₃F

Also, a reaction of iodine with peroxydisulfuryl difluoride: ^{[3] [4]}

3I₂ + S₂O₆F₂ → 2I₃SO₃F

Chemical characteristics

The compound hydrolyzes well in water and dissolves in sulfuric acid.

It reacts with tetrafluoroethylene (C₂F₄) to form ICF₂CF₂O₃SF and I₂. ^[5]

See also

• Bromine fluorosulfate
• Chlorine fluorosulfate
• Iodine fluorosulfate

References

1. Williamson, Stanley M. (1966). Recent Progress in Sulfur-Fluorine Chemistry. Progress in Inorganic Chemistry. Vol. 7. John Wiley & Sons, Ltd. pp. 39–81. doi:10.1002/9780470166086.ch2. ISBN   978-0-470-17675-7.
2. Aubke, Friedhelm; Cady, George H. (1 March 1965). "Iodine Fluorosulfates". Inorganic Chemistry . 4 (3): 269–273. doi:10.1021/ic50025a001. ISSN   0020-1669 . Retrieved 18 August 2025.
3. U.S. Government Research Reports. U.S. Department of Commerce, Office of Technical Services. 1964. p. 24. Retrieved 18 August 2025.
4. Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3131. ISBN   978-0-412-30120-9 . Retrieved 18 August 2025.
5. Fokin, A. V.; Studnev, Yu. N.; Rapkin, A. I.; Tatarinov, A. S. (1 August 1983). "Reaction of iodine fluosulfate and tris(fluosulfate) with haloalkanes". Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science. 32 (8): 1700–1702. doi:10.1007/BF00954296. ISSN   1573-9171.