Rhodium(IV) oxide
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Identifiers | |
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12137-27-8 | |
ChemSpider | 15017693 |
EC Number | 235-237-0 |
Jmol 3D model | Interactive image |
PubChem | 82936 |
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Properties | |
RhO2 | |
Molar mass | 134.904 g/mol |
Appearance | black crystalline solid |
Density | 7.2 g/cm3 |
Melting point | 1,050 °C (1,920 °F; 1,320 K) (decomposes) |
Solubility | insoluble in aqua regia |
Structure | |
tetragonal (rutile) | |
Vapor pressure | {{{value}}} |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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verify (what is ?) | |
Infobox references | |
Rhodium(IV) oxide (or rhodium dioxide) is the chemical compound with the formula RhO2.
Chemical properties
RhO2 is highly insoluble[clarification needed] even in hot aqua regia.[1]
Structure
RhO2 has the tetragonal rutile structure.[2]
Physical properties
RhO2 has metallic resistivity with values <10−4 Ohm·cm. It transforms in air to RhO3 at 850 °C and then to metal and oxygen at 1050 °C.[2]
See also
References
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