Peroxycarbonate

Last updated • 1 min readFrom Wikipedia, The Free Encyclopedia
α-Peroxycarbonate
Chemfm peroxocarbonate 2neg.svg
Names
Preferred IUPAC name
Oxidocarbonate
Systematic IUPAC name
Oxocarbonate
Other names
Peroxycarbonate (Peroxocarbonate)
Percarbonate
Peroxidocarboxylate
Peroxidoformate
Dioxidan-2-idecarboxylate
Identifiers
3D model (JSmol)
ChemSpider
PubChem CID
  • InChI=1S/CH2O4/c2-1(3)5-4/h4H,(H,2,3)/p-2
    Key: MMCOUVMKNAHQOY-UHFFFAOYSA-L
  • C(=O)([O-])O[O-]
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).

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−CO2 have also been obtained. [7] [8] [9] [10]

See also

Related Research Articles

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<span class="mw-page-title-main">Oxocarbon anion</span> Negatively-charged molecule made of carbon and oxygen

In chemistry, an oxocarbon anion is a negative ion consisting solely of carbon and oxygen atoms, and therefore having the general formula C
x
On
y
for some integers x, y, and n.

<span class="mw-page-title-main">Peroxydicarbonate</span>

In chemistry, peroxydicarbonate is a divalent anion with the chemical formula C
2
O2−
6
. It is one of the oxocarbon anions, which consist solely of carbon and oxygen. Its molecular structure can be viewed as two carbonate anions joined so as to form a peroxide bridge –O–O–.

<span class="mw-page-title-main">Metal peroxide</span> Metal-containing compounds with peroxide (O2) ions/groups

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References

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  2. Riesenfeld, E. H.; Mau, W. (1911). "Isomere Percarbonate". Berichte der Deutschen Chemischen Gesellschaft. 44 (3): 3595–3605. doi:10.1002/cber.191104403244.
  3. "Hydroperoxyformic acid". ChemBK.
  4. 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.
  5. 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.
  6. 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, ISBN   9780444516008
  7. 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.
  8. 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.
  9. M. Mehta and A. Adam (1998), Z. Kristallogr., Suppl. Issue 15 p. 53. Cited by Gjikaj.
  10. M. Mehta and A. Adam (1998), Z. Kristallogr., Suppl. Issue 15 p. 46. Cited by Gjikaj.