Rhodium(III) perchlorate refers to the inorganic compound with the formula Rh(H2O)6(ClO4)3. It is a hygroscopic yellow solid. It is the perchlorate salt of the tricationic aquo complex [Rh(H2O)6]3+.
Preparation The compound is prepared by treating hydrated rhodium(III) chloride and perchloric acid at elevated temperatures: [Rh(H2O)6]Cl3 + 3 HClO4 → [Rh(H2O)6](ClO4)3 + 3 HCl
The reaction of rhodium(III) hydroxide with concentrated perchloric acid also produces rhodium(III) perchlorate.Gilbert H. Ayres, John S. Forrester. The preparation of rhodium(III) perchlorate hexahydrate. Journal of Inorganic and Nuclear Chemistry, 1957. Vol.3, Iss.6, pp 365-366 Rh(OH)3 + 3 HClO4 → Rh(ClO4)3 + 3 H2O
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