Peroxocarbonate
Encyclopedia
In chemistry
, peroxocarbonate is a divalent
anion with formula CO42−. It is an oxocarbon anion
that consists solely of carbon
and oxygen
. It would be the anion of an hypothetical peroxocarbonic acid HO–CO–O–OH.
The peroxocarbonate anion is formed, together with peroxodicarbonate
C2O62−, at the negative electrode
during electrolysis
of molten lithium carbonate
. Lithium peroxocarbonate can be produced also by combining carbon dioxide
CO2 with lithium hydroxide
in concentrated hydrogen peroxide
H2O2 at −10°C.
The peroxocarbonate anion has been proposed as an intermediate to explain the catalytic effect of CO2 on the oxidation of organic compounds by O2.
The potassium and rubidium salts of the monvalent hydrogenperoxocarbonate anion H-O-O-CO2− have also been obtained.
Chemistry
Chemistry is the science of matter, especially its chemical reactions, but also its composition, structure and properties. Chemistry is concerned with atoms and their interactions with other atoms, and particularly with the properties of chemical bonds....
, peroxocarbonate is a divalent
Valence (chemistry)
In chemistry, valence, also known as valency or valence number, is a measure of the number of bonds formed by an atom of a given element. "Valence" can be defined as the number of valence bonds...
anion with formula CO42−. It is an oxocarbon anion
Oxocarbon anion
In chemistry, an oxocarbon anion is a negative ion consisting solely of carbon and oxygen atoms, and therefore having the general formula CxOyn− for some integers x, y, and n....
that consists solely of carbon
Carbon
Carbon is the chemical element with symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds...
and oxygen
Oxygen
Oxygen is the element with atomic number 8 and represented by the symbol O. Its name derives from the Greek roots ὀξύς and -γενής , because at the time of naming, it was mistakenly thought that all acids required oxygen in their composition...
. It would be the anion of an hypothetical peroxocarbonic acid HO–CO–O–OH.
The peroxocarbonate anion is formed, together with peroxodicarbonate
Peroxodicarbonate
In chemistry, peroxodicarbonate is a divalent anion with formula C2O62−. It is one of the oxocarbon anions, that consist solely of carbon and oxygen...
C2O62−, at the negative electrode
Electrode
An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit...
during electrolysis
Electrolysis
In chemistry and manufacturing, electrolysis is a method of using a direct electric current to drive an otherwise non-spontaneous chemical reaction...
of molten lithium carbonate
Lithium carbonate
Lithium carbonate is a chemical compound of lithium, carbon, and oxygen with the formula Li2CO3. This colorless salt is widely used in the processing of metal oxides and has received attention for its use in psychiatry. It is found in nature as the rare mineral zabuyelite.-Properties:Like almost...
. Lithium peroxocarbonate can be produced also by combining carbon dioxide
Carbon dioxide
Carbon dioxide is a naturally occurring chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom...
CO2 with lithium hydroxide
Lithium hydroxide
Lithium hydroxide is an inorganic compound with the formula LiOH. It is a white hygroscopic crystalline material. It is soluble in water and slightly soluble in ethanol...
in concentrated hydrogen peroxide
Hydrogen peroxide
Hydrogen peroxide is the simplest peroxide and an oxidizer. Hydrogen peroxide is a clear liquid, slightly more viscous than water. In dilute solution, it appears colorless. With its oxidizing properties, hydrogen peroxide is often used as a bleach or cleaning agent...
H2O2 at −10°C.
The peroxocarbonate anion has been proposed as an intermediate to explain the catalytic effect of CO2 on the oxidation of organic compounds by O2.
The potassium and rubidium salts of the monvalent hydrogenperoxocarbonate anion H-O-O-CO2− have also been obtained.