Copper peroxide
| Names | |
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| IUPAC name
Copper(II) peroxide
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
CompTox Dashboard (EPA)
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| Properties | |
| Cu(O2) | |
| Molar mass | 95.945 g/mol |
| Appearance | Various |
| Related compounds | |
Related compounds
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Copper(IV) oxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Copper peroxide is an inorganic compound with the chemical formula Cu(O2). The 1:2 ratio of copper and oxygen would be consistent with copper in its common +2 oxidation state and a peroxide group. Cu(O2) has attracted interest from a computational perspective. One highly cited analysis concludes that gaseous Cu(O2) is a superoxide, with copper in a +1 oxidation state: Cu+O−2.
Older literature claims that treatment of cold suspended Cu(OH)2 with H2O2 creates a brown hydrate of "copper dioxide," which rapidly decomposes in the presence of water to form ill-defined green and yellow salts above 0 °C.