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
2
O2−
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]

Chemfm peroxocarbonate 2neg

See also

References

  1. ^ E. H. Riesenfeld, B. Reinhold (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.
  2. ^ E. H. Riesenfeld, W. Mau (1911): "Isomere Percarbonate". Berichte der deutschen chemischen Gesellschaft, 44(3), 3595–3605, doi:10.1002/cber.191104403244
  3. ^ Li-Jiang Chen, Chang-Jian Lin, Juan Zuo, Ling-Chun Song, and Chao-Ming Huang (2004), "First Spectroscopic Observation of Peroxocarbonate / Peroxodicarbonate in Molten Carbonate". J. Physical Chemistry B, volume 108, 7553–7556
  4. ^ T. P. Firsova, V. I. Kvlividze, A. N. Molodkina and T. G. Morozova (1975), "Synthesis and some properties of lithium peroxocarbonate". Russian Chemical Bulletin, Volume 24, Number 6, pp. 1318–1319; doi:10.1007/BF00922073
  5. ^ Sang-Eon Park, Jin S. Yoo (2004), "New CO
    2
    chemistry: Recent advances in utilizing CO
    2
    as an oxidant and current understanding on its role." Studies in Surface Science and Catalysis, volume 153, pp. 303–314.
  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.
  7. ^ Arnold Adam and Mathias Mehta (1998), "KH(O2)CO2·H2O2: Ein sauerstoffreiches Salz der Monoperoxokohlensaure". Angew. Chem. volume 110 p. 1457. Cited by Gjikaj.
  8. ^ M. Mehta and A. Adam (1998), Z. Kristallogr., Suppl. Issue 15 p. 53. Cited by Gjikaj.
  9. ^ M. Mehta and A. Adam (1998), Z. Kristallogr., Suppl. Issue 15 p. 46. Cited by Gjikaj.
Brettanomyces bruxellensis

Brettanomyces bruxellensis (the anamorph of Dekkera bruxellensis) is a yeast associated with and named after, the Senne valley near Brussels, Belgium. It is one of several members of the genus Brettanomyces, which were first classified at the Carlsberg brewery in 1904 by their technical director Niels Hjelte Claussen, who was investigating it as a cause of the fine flavour and condition of English ales, hence the name. Claussen applied on 17 May 1904 under U.S. Patent Application Number: US1904208464A for the "Manufacture of English beers and malt liquors". The patent was granted on 20 February 1906. The Isolation of an organism derived from bottles of traditional English beer was described and therefore the name Brettanomyces was chosen, from "briton" for the British origin and "myces" for the characterisation as fungus. Despite its Latin species name, B. bruxellensis is found all over the globe. In the wild, it is often found on the skins of fruit.

List of inorganic compounds

Although most compounds are referred to by their IUPAC systematic names (following IUPAC nomenclature), "traditional" names have also been kept where they are in wide use or of significant historical interests.

Sodium peroxycarbonate

Sodium peroxycarbonate or Sodium percarbonate, Sodium permonocarbonate is a chemical compound, a peroxycarbonate of sodium, with formula Na2CO4

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