| Identification | Back Directory | [Name]
Superoxide | [CAS]
11062-77-4 | [Synonyms]
Hyperoxid
Hyperoxide
Superoxide
Superoxides
Chebi:18421
Dioxide(1-)
Dioxidanidyl
Dioxide(.1-) | [Molecular Formula]
HO2 |
| Questions And Answer | Back Directory | [Description]
A compound characterized by the presence in its structure of the O2− ion. The O2− ion has an odd number of electrons (17) and as a result all superoxide compounds are paramagnetic. At room temperature they have a yellowish color. At low temperature many of them undergo reversible phase transitions accompanied by a color change to white. The stable superoxides are
sodium superoxide NaO2
potassium superoxide KO2
rubidium superoxide RbO2
cesium superoxide CsO2
calcium superoxide Ca(O2)2
strontium superoxide Sr(O2)2
barium superoxide Ba(O2)2
tetramethylammonium superoxide (CH3)4NO2
In these compounds each oxygen atom has an oxidation number of −1/2 instead of −2, as a normal oxide.
|
|
|