From Wikipedia, the free encyclopedia
This article is about the compound IO. For the oxoanion with the formula IO
−, see
hypoiodite. For the molecule I
2O, see
Diiodine monoxide.
Iodine monoxide
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Names
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Other names
Iodine(II) oxide, iodosyl, oxidoiodine
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Identifiers
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ChEBI
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ChemSpider
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1170
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InChI=1S/IO/c1-2 Key: AFSVSXMRDKPOEW-UHFFFAOYSA-N
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Properties
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IO
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Molar mass
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142.903 g·mol−1
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Appearance
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purple gas[
citation needed]
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Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
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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
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^ 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.
-
^
"Iodine oxide".
NIST.
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^ 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.
-
^ Nikitin, I. V. (13 March 2008).
"HALOGEN MONOXIDES" (in Russian).
Institute of Problems of Chemical Physics,
Russian Academy of Sciences. Retrieved 27 March 2023.
- ^
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.
-
^
"The Atmospheric Chemistry of Iodine Monoxide" (PDF).
NIST. Retrieved 27 March 2023.
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Mixed oxidation states | |
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+1 oxidation state | |
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+2 oxidation state | |
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+3 oxidation state | |
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+4 oxidation state | |
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+5 oxidation state | |
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+6 oxidation state | |
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+7 oxidation state | |
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+8 oxidation state | |
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Related | |
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Iodine(-I) | |
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Iodine(I) | |
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Iodine(II) | |
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Iodine(III) | |
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Iodine(IV) | |
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Iodine(V) | |
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Iodine(VII) | |
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