Iodite (Redirected from Iodous acid)

Iodite
Iodite ion.svg
Names
IUPAC name
iodite
Systematic IUPAC name
dioxidoiodate(1−)
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/HIO2/c2-1-3/h(H,2,3)/p-1
  • [O-][I+][O-]
Properties
IO
2
Molar mass 58.90 g/mol
Conjugate acid Iodous acid
Related compounds
Other anions
Chlorite
Bromite
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

The iodite ion, or iodine dioxide anion, is the halite with the chemical formula IO
2
. Within the ion the Iodine exists in the oxidation state of +3.

Iodite anion

Iodites (including iodous acid) are highly unstable and have been observed but never isolated. They will rapidly disproportionate to molecular Iodine and Iodates. However, they have been detected as intermediates in the conversion between iodide and iodate.

Iodous acid

Iodous acid
Iodige Saeure.png
Ball-and-stick model of iodous acid
Space-filling model of iodous acid
Names
IUPAC name
iodous acid
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/HIO2/c2-1-3/h(H,2,3)
  • O[I+][O-]
Properties
HIO2
Molar mass 159.91 g/mol
Conjugate base Iodite
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Iodous acid is acid form of the iodite ion, with the formula HIO2.

Other oxyanions

Iodine can assume oxidation states of −1, +1, +3, +5, or +7. A number of neutral iodine oxides are also known.

Iodine oxidation state −1 +1 +3 +5 +7
Name Iodide Hypoiodite Iodite Iodate periodate
Formula I IO IO
2
IO
3
IO
4
or IO5−
6

This page was last updated at 2023-06-18 05:23 UTC. Update now. View original page.

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