Synonyms Iridium(IV) oxide
Molecular Formula IrO2
Molecular Weight 224.22
CAS Registry Number 12030-49-8
EINECS 234-743-9
Water solubility INSOLUBLE
Iridium dioxide, IrO2, is the only well characterised oxide of iridium. Its crystal has the TiO2, rutile structure containing six coordinate iridium and three coordinate oxygen.
Iridium dioxide is used with other rare oxides in the coating of anode-electrodes for industrial electrolysis.
Iridium dioxide can be formed by oxidation of iridium black, a finely divided powder of iridium metal.
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