Iridium(IV) oxide

Chembox new
ImageFile = Rutile-unit-cell-3D-balls.png ImageSize = 200px
IUPACName = Iridium(IV) oxide
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Section1 = Chembox Identifiers
CASNo = 12030-49-8
PubChem =
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Section2 = Chembox Properties
Formula = IrO₂
MolarMass = 224.22
Appearance = black solid
Density = 11.66 g/cm³
MeltingPt = decomposes at 1100 °C
BoilingPt =
Solubility = insoluble in water
Section3 = Chembox Hazards
MainHazards =
FlashPt =
Autoignition =

Iridium(IV) oxide, IrO₂, is the only well characterised oxide of iridium. Its crystal has the TiO₂, rutile structure containing six coordinate iridium and three coordinate oxygen. Greenwood&Earnshaw]

References