Iodine monoxide

Iodine monoxide
Names
Other names
Iodine(II) oxide, iodosyl, oxidoiodine
Identifiers
CAS Number
  • 14696-98-1 checkY
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:29896
ChemSpider
  • 4574060
Gmelin Reference
1170
PubChem CID
  • 5460557
CompTox Dashboard (EPA)
  • 101316449
InChI
  • InChI=1S/IO/c1-2
    Key: AFSVSXMRDKPOEW-UHFFFAOYSA-N
  • [O]I
Properties
Chemical formula
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).
Infobox references
Chemical compound

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]

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. ^ 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. ^ "Iodine oxide". NIST.
  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. ^ 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. ^ a b 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. ^ "The Atmospheric Chemistry of Iodine Monoxide" (PDF). NIST. Retrieved 27 March 2023.
  • v
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Mixed oxidation states
+1 oxidation state
+2 oxidation state
+3 oxidation state
  • Actinium(III) oxide (Ac2O3)
  • Aluminium oxide (Al2O3)
  • Americium(III) oxide (Am2O3)
  • Antimony trioxide (Sb2O3)
  • Arsenic trioxide (As2O3)
  • Berkelium(III) oxide (Bk2O3)
  • Bismuth(III) oxide (Bi2O3)
  • Boron trioxide (B2O3)
  • Caesium sesquioxide (Cs2O3)
  • Californium(III) oxide (Cf2O3)
  • Cerium(III) oxide (Ce2O3)
  • Chromium(III) oxide (Cr2O3)
  • Cobalt(III) oxide (Co2O3)
  • Dinitrogen trioxide (N2O3)
  • Dysprosium(III) oxide (Dy2O3)
  • Einsteinium(III) oxide (Es2O3)
  • Erbium(III) oxide (Er2O3)
  • Europium(III) oxide (Eu2O3)
  • Gadolinium(III) oxide (Gd2O3)
  • Gallium(III) oxide (Ga2O3)
  • Gold(III) oxide (Au2O3)
  • Holmium(III) oxide (Ho2O3)
  • Indium(III) oxide (In2O3)
  • Iron(III) oxide (Fe2O3)
  • Lanthanum oxide (La2O3)
  • Lutetium(III) oxide (Lu2O3)
  • Manganese(III) oxide (Mn2O3)
  • Neodymium(III) oxide (Nd2O3)
  • Nickel(III) oxide (Ni2O3)
  • Phosphorus trioxide (P4O6)
  • Praseodymium(III) oxide (Pr2O3)
  • Promethium(III) oxide (Pm2O3)
  • Rhodium(III) oxide (Rh2O3)
  • Samarium(III) oxide (Sm2O3)
  • Scandium oxide (Sc2O3)
  • Terbium(III) oxide (Tb2O3)
  • Thallium(III) oxide (Tl2O3)
  • Thulium(III) oxide (Tm2O3)
  • Titanium(III) oxide (Ti2O3)
  • Tungsten(III) oxide (W2O3)
  • Vanadium(III) oxide (V2O3)
  • Ytterbium(III) oxide (Yb2O3)
  • Yttrium(III) oxide (Y2O3)
+4 oxidation state
+5 oxidation state
+6 oxidation state+7 oxidation state
+8 oxidation stateRelated
Oxides are sorted by oxidation state. Category:Oxides
  • v
  • t
  • e
Iodine(-I)
Iodine(I)
Iodine(II)
  • IO
Iodine(III)
  • HIO2
  • ICl3
  • IF3
  • IBr3
Iodine(IV)
  • IO
    2
Iodine(V)
  • HIO3
  • IF5
  • I2O5
  • IO2F
  • IOF3
Iodine(VII)
  • HIO4
  • H5IO6
  • IF7
  • IO3F
  • IO2F3
  • IOF5