Peroxycarbonate
In chemistry, peroxycarbonate (sometimes peroxocarbonate) is a divalent anion with formula CO2−
4. It is an oxocarbon anion that consists solely of carbon and oxygen. It would be the anion of a hypothetical peroxocarbonic acid HO–CO–O–OH.[1][2] or the real hydroperoxyformic acid, HO-O-CO-OH (a.k.a. percarbonic acid, carbonoperoxoic acid).
The peroxycarbonate anion is formed, together with peroxydicarbonate C
2O2−
6, at the negative electrode during electrolysis of molten lithium carbonate.[3] Lithium peroxycarbonate can be produced also by combining carbon dioxide CO2 with lithium hydroxide in concentrated hydrogen peroxide H2O2 at −10 °C.[4]
The peroxycarbonate anion has been proposed as an intermediate to explain the catalytic effect of CO2 on the oxidation of organic compounds by O2.[5]
The potassium and rubidium salts of the monovalent hydrogenperoxocarbonate anion H–O–O–CO−
2 have also been obtained.[6][7][8][9]
See also
- Sodium percarbonate, actually a perhydrate of sodium carbonate.
- Sodium peroxycarbonate
- Orthocarbonate, hypothetical CO4−
4 ion
References
- ^ Riesenfeld, E. H.; Reinhold, B. (1909). "Die Existenz echter Percarbonate und ihre Unterscheidung von Carbonaten mit Krystall-Wasserstoffsuperoxyd". Berichte der Deutschen Chemischen Gesellschaft. 42 (4): 4377–4383. doi:10.1002/cber.19090420428.
- ^ Riesenfeld, E. H.; Mau, W. (1911). "Isomere Percarbonate". Berichte der Deutschen Chemischen Gesellschaft. 44 (3): 3595–3605. doi:10.1002/cber.191104403244.
- ^ Chen, Li-Jiang; Lin, Chang-Jian; Zuo, Juan; Song, Ling-Chun; Huang, Chao-Ming (2004). "First Spectroscopic Observation of Peroxocarbonate/ Peroxodicarbonate in Molten Carbonate". The Journal of Physical Chemistry B. 108 (23): 7553–7556. doi:10.1021/jp035749l.
- ^ Firsova, T. P.; Kvlividze, V. I.; Molodkina, A. N.; Morozova, T. G. (1975). "Synthesis and some properties of lithium peroxocarbonate". Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science. 24 (6): 1318–1319. doi:10.1007/BF00922073.
- ^ Park, Sang-Eon; Yoo, Jin S. (2004), "New CO2 chemistry – Recent advances in utilizing CO2 as an oxidant and current understanding on its role", Studies in Surface Science and Catalysis, Carbon Dioxide Utilization for Global Sustainability, 153, Elsevier: 303–314, doi:10.1016/s0167-2991(04)80269-6
- ^ 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.
- ^ Adam, Arnold; Mehta, Mathias (1998). "KH(O2)CO2·H2O2—An Oxygen-Rich Salt of Monoperoxocarbonic Acid". Angewandte Chemie International Edition. 37 (10): 1387–1388. doi:10.1002/(SICI)1521-3773(19980605)37:10<1387::AID-ANIE1387>3.0.CO;2-3. ISSN 1521-3773. PMID 29710903.
- ^ 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.
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