Peroxycarbonate
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| Names | |
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| Preferred IUPAC name
Oxidocarbonate | |
| Systematic IUPAC name
Oxocarbonate | |
| Other names
Peroxycarbonate (Peroxocarbonate)
Percarbonate Peroxidocarboxylate Peroxidoformate Dioxidan-2-idecarboxylate | |
| Identifiers | |
3D model (JSmol)
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| CO42− | |
| Molar mass | 76.01 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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In chemistry, peroxycarbonate (sometimes peroxocarbonate, IUPAC name: oxocarbonate or oxidocarbonate) or percarbonate is a divalent anion with formula CO2−
4. It is an oxocarbon anion that consists solely of carbon and oxygen. It is the anion of peroxycarbonic acid[1][2] also called hydroperoxyformic acid,[3] HO−O−CO−OH.
The peroxycarbonate anion is formed, together with peroxydicarbonate C2O2−6, at the negative electrode during electrolysis of molten lithium carbonate.[4] Lithium peroxycarbonate can be produced also by combining carbon dioxide CO2 with lithium hydroxide in concentrated hydrogen peroxide H2O2 at −10 °C.[5]
Electrolysis of a solution of lithium carbonate at -30° to -40 °C yields a solution of the Lithium percarbonate, which can liberate iodine from potassium iodide instantaneously. The crystalline salt has not been isolated.
The peroxycarbonate anion has been proposed as an intermediate to explain the catalytic effect of CO2 on the oxidation of organic compounds by O2.[6]
The potassium and rubidium salts of the monovalent hydrogenperoxycarbonate anion (aka. hydroxycarbonate, biperoxycarbonate) H−O−O−CO−2 have also been obtained.[7][8][9][10]
See also
[edit | edit source]- Sodium percarbonate, actually a perhydrate of sodium carbonate.
- Sodium peroxycarbonate
- Orthocarbonate anion CO4−
4 - Dipropyl peroxydicarbonate
References
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- ^ Mimoza Gjikaj (2001), "Darstellung und strukturelle Charakterisierung neuer Alkali- bzw. Erdalkalimetallperoxide, -hydrogenperoxide, -peroxocarbonate und -peroxohydrate" Archived 2012-02-25 at the Wayback Machine. Doctoral Thesis, University of Köln. 115 pages.
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ M. Mehta and A. Adam (1998), Z. Kristallogr., Suppl. Issue 15 p. 53. Cited by Gjikaj.
- ^ M. Mehta and A. Adam (1998), Z. Kristallogr., Suppl. Issue 15 p. 46. Cited by Gjikaj.