High Quality Content by WIKIPEDIA articles! Rhodium(III) oxide (or Rhodium sesquioxide) is the chemical compound with the formula Rh2O3. Rh2O3 has been found in two major forms. The hexagonal form has the corundum structure. It transforms into an orthorhombic structure when heated above 750 °C. Rhodium oxide can be produced via several routes: * Rh metal powder is fused potassium hydrogen sulfate. Adding sodium hydroxide results in hydrated rhodium oxide, which upon heating converts to Rh2O3. Rhodium oxide thin films can be produced by exposing Rh layer to oxygen plasma.

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