Iodyl fluoride

Iodyl fluoride

Names
IUPAC name Fluoro(dioxo)-λ^5-iodane
Identifiers
CAS Number	28633-62-7^Y
3D model (JSmol)	Interactive image
ChemSpider	57449638
PubChem CID	44546993
CompTox Dashboard (EPA)	DTXSID20659296
InChI InChI=1S/FIO2/c1-2(3)4 Key: FRYHXHDHQQGJSF-UHFFFAOYSA-N
SMILES O=I(F)=O
Properties
Chemical formula	FIO2
Molar mass	177.901 g·mol^−1
Appearance	colorless crystals
Density	4.982 g/cm^3
Melting point	200 °C (392 °F; 473 K)
Solubility in water	Reacts with water
Related compounds
Related compounds	Iodosyl pentafluoride Iodosyl trifluoride Periodyl fluoride Iodyl trifluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Iodyl fluoride is an inorganic compound of iodine, fluorine, and oxygen with the chemical formula IO₂F. The compound was initially synthesized in 1951.^[1]

Synthesis

• Iodyl fluoride can be decomposed by iodosyl trifluoride heated to 110 °C in nitrogen. Since this reaction is reversible, the reaction requires constant removal of iodine pentafluoride.^[1]

2IOF₃ ⇌ IO₂F + IF₅

• Dissolving the anhydride of iodic acid, I₂O₅, in anhydrous hydrofluoric acid.^[2]

I₂O₅ + HF → IO₂F + HIO₃

Physical properties

Iodyl fluoride forms colorless crystals of orthorhombic system.^[3] Reacts with water.^[4]

Chemical properties

Iodyl fluoride is stable in dry air, but slowly hydrolyzes to iodic and hydrofluoric acids in moisture.^[1]

IO₂F + H₂O → HIO₃ + HF

The compound reacts with strong fluorinating agents such as bromine trifluoride and selenium tetrafluoride to form iodine pentafluoride. Iodyl fluoride can be reduced to elemental iodine by pure hydrogen peroxide.^[5][6]

3IO₂F + 4BrF₃ → 3IF₅ + 2Br₂ + 3O₂

IO₂F + 2SeF₄ → IF₅ + 2SeOF₂

References

1. Aynsley, E. E.; Nichols, R.; Robinson, P. L. (1 January 1953). "126. Reactions of iodine pentafluoride with inorganic substances. Iodine oxytrifluoride and iodyl fluoride". Journal of the Chemical Society: 623–626. doi:10.1039/JR9530000623. ISSN 0368-1769. Retrieved 24 May 2023.
2. Wiberg, Egon; Wiberg, Nils (2001). Inorganic Chemistry. Academic Press. p. 468. ISBN 978-0-12-352651-9. Retrieved 24 May 2023.
3. Minkwitz, Rolf; Berkei, Michael; Ludwig, Ralf (1 December 2001). "Crystal Structure of IO2F". Inorganic Chemistry. 40 (25): 6493–6495. doi:10.1021/ic0105462. ISSN 0020-1669. PMID 11720506. Retrieved 24 May 2023.
4. Haynes, William M. (4 June 2014). CRC Handbook of Chemistry and Physics. CRC Press. p. 4-67. ISBN 978-1-4822-0868-9. Retrieved 24 May 2023.
5. Schmeisser, M.; Brändle, K. (1 January 1963). "Oxides and Oxyfluorides of the Halogens". Advances in Inorganic Chemistry and Radiochemistry. 5. Academic Press: 41–89. doi:10.1016/S0065-2792(08)60152-1. ISBN 9780120236053. Retrieved 24 May 2023.
6. Advances in Inorganic Chemistry and Radiochemistry. Academic Press. 1 January 1963. ISBN 978-0-08-057854-5. Retrieved 24 May 2023.