Iodine monoxide explained

Iodine monoxide is a binary inorganic compound of iodine and oxygen with the chemical formula IO•. A free radical, this compound is the simplest of many iodine oxides.^{[1] [2] [3]} It is similar to the oxygen monofluoride, chlorine monoxide and bromine monoxide radicals.

Synthesis

Iodine monoxide can be obtained by the reaction between iodine and oxygen:^[4]

Chemical properties

Iodine monoxide decomposes to its prime elements:

Iodine monoxide reacts with nitric oxide:^[5]

Atmosphere

Atmospheric iodine atoms (e.g. from iodomethane) can react with ozone to produce the iodine monoxide radical:^{[6] [5]}

This process can contribute to ozone depletion.

Notes and References

1. Dix . Barbara . Baidar . Sunil . Bresch . James F. . Hall . Samuel R. . Schmidt . K. Sebastian . Wang . Siyuan . Volkamer . Rainer . Detection of iodine monoxide in the tropical free troposphere . Proceedings of the National Academy of Sciences . 5 February 2013 . 110 . 6 . 2035–2040 . 10.1073/pnas.1212386110 . en . 0027-8424. free . 3568334 .
2. Web site: Iodine oxide . . en.
3. Book: Haynes . William M. . CRC Handbook of Chemistry and Physics, 96th Edition . 9 June 2015 . . 978-1-4822-6097-7 . 2-17 . 27 March 2023 . en.
4. Web site: Nikitin . I. V. . HALOGEN MONOXIDES . . 27 March 2023 . ru . 13 March 2008.
5. Book: Brasseur . Guy P. . Solomon . Susan . Aeronomy of the Middle Atmosphere: Chemistry and Physics of the Stratosphere and Mesosphere . 28 December 2005 . Springer Science & Business Media . 978-1-4020-3824-2 . 379 . 27 March 2023 . en.
6. Web site: The Atmospheric Chemistry of Iodine Monoxide . . 27 March 2023.