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+.

The compound is prepared by treating hydrated rhodium(III) chloride and perchloric acid at elevated temperatures:[1] The reaction of rhodium(III) hydroxide with concentrated perchloric acid also produce rhodium(III) perchlorate.

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