Copper peroxide

Copper(II) peroxide
Names
	IUPAC name Copper(II) peroxide
Identifiers
CAS Number	12019-06-6;
ChemSpider	13333045;
	InChI InChI=1S/Cu.O2/c;1-2/q+2;-2 Key: CNBDXDKFMUKCIQ-UHFFFAOYSA-N;
Properties
Chemical formula	CuO2
Molar mass	95.945 g/mol
Appearance	Dark olive-green solid
Related compounds
Related compounds	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

Copper peroxide is a hypothetical 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. Although samples of this composition have not been isolated, CuO₂ has attracted interest from computational perspective. One highly cited analysis concludes that gaseous CuO₂ is a superoxide, with copper in a +1 oxidation state: Cu⁺O−2.^[1]

^ Gutsev, G. L.; Rao, B. K.; Jena, P. (2000). "Systematic Study of Oxo, Peroxo, and Superoxo Isomers of 3d-Metal Dioxides and Their Anions". The Journal of Physical Chemistry A. 104 (51): 11961–11971. Bibcode:2000JPCA..10411961G. doi:10.1021/jp002252s.

[1] Gutsev, G. L.; Rao, B. K.; Jena, P. (2000). "Systematic Study of Oxo, Peroxo, and Superoxo Isomers of 3d-Metal Dioxides and Their Anions". The Journal of Physical Chemistry A. 104 (51): 11961–11971. Bibcode:2000JPCA..10411961G. doi:10.1021/jp002252s.

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