Iodine trifluoride dioxide

Iodine trifluoride dioxide is an inorganic compound of iodine, fluorine, and oxygen with the chemical formula IO₂F₃.^[1][2][3] The compound was first obtained by Engelbrecht and Petersy in 1969.^[4]

Iodine trifluoride dioxide

Names
Other names Iodyl trifluoride
Identifiers
CAS Number	25402-50-0 Y
3D model (JSmol)	Interactive image
InChI InChI=1S/F3IO2/c1-4(2,3,5)6 Key: IEYUHHXVKPWNHY-UHFFFAOYSA-N
SMILES F[I](=O)(=O)(F)F
Properties
Chemical formula	F3IO2
Molar mass	215.898 g·mol−1
Appearance	yellow crystals
Melting point	41 °C (106 °F; 314 K)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	ignites on contact with flammable organic substances
Related compounds
Related compounds	Iodosyl trifluoride Iodosyl pentafluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

Iodine trifluoride dioxide may be formed by the reaction of HOIOF₄ and oleum.^[4]

Physical properties

Iodine trifluoride dioxide forms yellow crystals, which melt at 41 °C.^[5] Decomposes under direct sunlight or heating.

The molecules in the crystals are dimers. The compound is monomeric above 100 °C.^[6]

Chemical properties

Iodine trifluoride dioxide decomposes when heated:

2IO₂F₃ → 2IOF₃ + O₂

References

1. 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.
2. "iodine trifluoride dioxide". ChemSrc. Retrieved 24 May 2023.
3. Carter, H. A.; Ruddick, J. N.; Sams, J. R.; Aubke, F. (1 January 1975). "Some reactions of iodine(VII) dioxide trifluoride, IO2F3". Inorganic and Nuclear Chemistry Letters. 11 (1): 29–34. doi:10.1016/0020-1650(75)80142-5. ISSN 0020-1650. Retrieved 24 May 2023.
4. Advances in Inorganic Chemistry. Academic Press. 1 November 1983. p. 180. ISBN 978-0-08-057876-7. Retrieved 24 May 2023.
5. Downs, A. J.; Adams, C. J. (4 May 2017). The Chemistry of Chlorine, Bromine, Iodine and Astatine: Pergamon Texts in Inorganic Chemistry, Volume 7. Elsevier. p. 1395. ISBN 978-1-4831-5832-7. Retrieved 24 May 2023.
6. Wiberg, Egon; Wiberg, Nils (2001). Inorganic Chemistry. Academic Press. p. 468. ISBN 978-0-12-352651-9. Retrieved 24 May 2023.