Editing Copper(I) oxide (section)

{{Short description|Chemical compound – an oxide of copper with formula Cu2O}}
{{chembox
| Watchedfields  = changed
| verifiedrevid  = 476999452
| Name           = Copper(I) oxide
| ImageFile      = copperIoxide.jpg
| ImageSize      = 150px
| ImageName      = Copper(I) oxide
| ImageFile1     = Copper(I)-oxide-unit-cell-A-3D-balls.png
| ImageName1     = Copper(I) oxide unit cell
| ImageSize1     = 150px
| ImageCaption1  = [[Unit cell]]
| ImageFile2     = Copper(I)-oxide-xtal-3x3x3-3D-bs-17.png
| ImageSize2     = 
| ImageCaption2  = [[Crystal packing]]
| IUPACName      = Copper(I) oxide
| OtherNames     = Cuprous oxide<br />Dicopper oxide<br />[[Cuprite]]<br />Red copper oxide
| Section1       = {{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 8488659
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = T8BEA5064F
| InChI = 1/2Cu.O/rCu2O/c1-3-2
| SMILES = [Cu]O[Cu]
| InChIKey = BERDEBHAJNAUOM-YQWGQOGZAF
| InChI1 = 1/2Cu.O/q2*+1;-2
| InChIKey1 = KRFJLUBVMFXRPN-UHFFFAOYAM
| SMILES1 = [Cu+].[Cu+].[O-2]
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/2Cu.O/q2*+1;-2
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = KRFJLUBVMFXRPN-UHFFFAOYSA-N
| CASNo = 1317-39-1
| CASNo_Ref = {{cascite|correct|CAS}}
| PubChem = 10313194
| RTECS = GL8050000
| EINECS = 215-270-7
| KEGG_Ref = {{keggcite|correct|kegg}}
| KEGG = C18714
| ChEBI = 81908
  }}
| Section2       = {{Chembox Properties
| Formula = Cu<sub>2</sub>O
| MolarMass = 143.09 g/mol
| Appearance = yellow, red, or brown solid
| Density = 6.0 g/cm<sup>3</sup>
| Solubility = Insoluble
| SolubleOther = Soluble
| Solvent = acid
| MeltingPtC = 1232
| BoilingPtC = 1800
| BoilingPt_notes = ''decomposes''
| BandGap = 2.137&nbsp;[[Electronvolt|eV]]
| MagSus = {{val|-20e-6|u=cm<sup>3</sup>/mol}}
  }}
| Section3       = {{Chembox Structure
| Coordination = 
| CrystalStruct = [[Cubic crystal system|cubic]]
| SpaceGroup = Pn{{overline|3}}m, [[List of space groups#List of Cubic|#224]]
| LattConst_a = 4.2696
  }}
| Section4       = {{Chembox Thermochemistry
| DeltaHf = −170&nbsp;kJ·mol<sup>−1</sup>
| Entropy = 93&nbsp;J·mol<sup>−1</sup>·K<sup>−1</sup>
 }}
| Section7       = {{Chembox Hazards
| ExternalSDS = [http://siri.org/msds/mf/cards/file/0421.html SIRI.org]
| GHSPictograms = {{GHS05}}{{GHS07}}{{GHS09}}
| GHSSignalWord = Danger
| HPhrases = {{H-phrases|302|318|332|410}}
| PPhrases = {{P-phrases|273|305+351+338}}
| NFPA-H = 2
| NFPA-F = 0
| NFPA-R = 1
| PEL = TWA 1 mg/m<sup>3</sup> (as Cu)<ref name=PGCH>{{PGCH|0150}}</ref>
| REL = TWA 1 mg/m<sup>3</sup> (as Cu)<ref name=PGCH/>
| IDLH =  TWA 100 mg/m<sup>3</sup> (as Cu)<ref name=PGCH/>
  }}
| Section8       = {{Chembox Related
| OtherAnions = [[Copper(I) sulfide]]<br />[[Copper(II) sulfide]]<br />[[Copper(I) selenide]]
| OtherCations = [[Copper(II) oxide]]<br />[[Silver(I) oxide]]<br />[[Nickel(II) oxide]]<br />[[Zinc oxide]]
  }}
}}
'''Copper(I) oxide''' or '''cuprous oxide''' is the [[inorganic compound]] with the formula Cu<sub>2</sub>O. It is one of the principal [[oxide]]s of [[copper]], the other being [[copper(II) oxide]] or cupric oxide (CuO). The compound can appear either yellow or red, depending on the size of the particles.<ref>N. N. Greenwood, A. Earnshaw, ''Chemistry of the Elements'', 2nd ed., Butterworth-Heinemann, Oxford, UK, 1997.</ref> Cuprous oxide is found as the [[mineral]] [[cuprite]]. It is a component of some [[antifouling]] paints, but also has other applications including some that exploit its property as a [[semiconductor]].