Iodine_monoxide

Iodine monoxide

Iodine monoxide

Chemical compound

This article is about the compound IO. For the oxoanion with the formula IO−, see hypoiodite. For the molecule I2O, see Diiodine monoxide.

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.

Quick Facts Names, Identifiers ...

Synthesis

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

I2 + O2 → 2 IO

Chemical properties

Iodine monoxide decomposes to its prime elements:[citation needed]

2 IO → I2 + O2

Iodine monoxide reacts with nitric oxide:[5]

2 IO + 2 NO → I2 + 2 NO2

Atmosphere

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

I2 + 2 O3 → 2 IO + 2 O2

This process can contribute to ozone depletion.[citation needed]

References

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