Dichlorotetrakis(pyridine)rhodium(III) chloride is the chloride salt of the coordination complex with the formula [RhCl<sub>2</sub>(pyridine)<sub>4</sub>]<sup>+</sup>. Various hydrates are known, but all are yellow solids. The tetrahydrate initially crystallizes from water. The tetrahydrate converts to the monohydrate upon vacuum drying at 100 ðC.
The hydrates of [RhCl<sub>2</sub>(pyridine)<sub>4</sub>]Cl are prepared by heating rhodium trichloride with an excess of pyridine in the presence of a catalytic amount of a reductant.
The molecular complex RhCl<sub>3</sub>(pyridine)<sub>3</sub> is an intermediate in the synthesis of [RhCl<sub>2</sub>(pyridine)<sub>4</sub>]Cl.