3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||224.22 g/mol|
|Melting point||1,100 °C (2,010 °F; 1,370 K) decomposes|
|Octahedral (Ir); Trigonal (O)|
|iridium(IV) fluoride, iridium disulfide|
|rhodium dioxide, osmium dioxide, platinum dioxide|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Iridium(IV) oxide, IrO2, is the only well characterised oxide of iridium. It is a blue black solid. The compound adopts the TiO2, rutile structure, featuring six coordinate iridium and three coordinate oxygen.
As described by its discoverers, it can be formed by treating green form of iridium trichloride with oxygen at high temperatures:
- IrCl3 + O2 → IrO2 + 1.5 Cl2
A hydrated form is also known..
- Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
- Cogan, Stuart F. (August 2008). "Neural Stimulation and Recording Electrodes". Annual Review of Biomedical Engineering. 10 (1): 275–309. doi:10.1146/annurev.bioeng.10.061807.160518.
- H. L. Grube (1963). "The Platinum Metals". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. NY: Academic Press. p. 1590.
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