Related compounds Molar mass 224.22 g/mol Melting point 1,100 °C | Formula IrO2 Density 11.66 g/cm³ Appearance black solid | |
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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.
It is used with other rare oxides in the coating of anode-electrodes for industrial electrolysis and in microelectrodes for electrophysiology research.
It can be formed by oxidation of iridium black, a finely divided powder of iridium metal.
References
Iridium(IV) oxide Wikipedia(Text) CC BY-SA