Names | |
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IUPAC name
iodite
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Systematic IUPAC name
dioxidoiodate(1−) | |
Identifiers | |
3D model (
JSmol)
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ChemSpider | |
PubChem
CID
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Properties | |
IO− 2 | |
Molar mass | 58.90 g/mol |
Conjugate acid | Iodous acid |
Related compounds | |
Other
anions
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Chlorite Bromite |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
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.
Iodites (including iodous acid) are highly unstable and have been observed [1] but never isolated.[ citation needed] They will rapidly disproportionate to molecular Iodine and Iodates. [2] However, they have been detected as intermediates in the conversion between iodide and iodate. [3] [4]
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Names | |||
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IUPAC name
iodous acid
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Identifiers | |||
3D model (
JSmol)
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ChemSpider | |||
PubChem
CID
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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).
|
Iodous acid is acid form of the iodite ion, with the formula HIO2.
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 |