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Ion From Wikipedia, the free encyclopedia
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.
Names | |
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IUPAC name
iodite | |
Systematic IUPAC name
dioxidoiodate(1−) | |
Identifiers | |
3D model (JSmol) |
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ChemSpider | |
PubChem CID |
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CompTox Dashboard (EPA) |
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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).
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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]
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 |
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Name | iodide | hypoiodite | iodite | iodate | periodate |
Formula | I− | IO− | IO− 2 |
IO− 3 |
IO− 4 or IO5− 6 |
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