Iodine monoxide

Source: Wikipedia, the free encyclopedia.
This article is about the compound IO. For the oxoanion with the formula IO−, see
Diiodine monoxide
.
Iodine monoxide
Names
Other names
Iodine(II) oxide, iodosyl, oxidoiodine
Identifiers
3D model (
JSmol
)
ChEBI
ChemSpider
1170
  • InChI=1S/IO/c1-2
    Key: AFSVSXMRDKPOEW-UHFFFAOYSA-N
SMILES
  • [O]I
Properties
IO
Molar mass 142.903 g·mol−1
Appearance purple gas[citation needed]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Iodine monoxide is a binary

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]

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. PMC 3568334
    .
  2. NIST
    .
  3. ISBN 978-1-4822-6097-7
    . Retrieved 27 March 2023.
  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. ^
    ISBN 978-1-4020-3824-2
    . Retrieved 27 March 2023.
  6. NIST
    . Retrieved 27 March 2023.
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