Dichlorotetrakis(pyridine)rhodium(III) chloride is the chloride salt of the coordination complex with the formula [RhCl2(pyridine)4]+.
Various hydrates are known, but all are yellow solids.
The tetrahydrate initially crystallizes from water.
[1] The tetrahydrate converts to the monohydrate upon vacuum drying at 100 °C.
The hydrates of [RhCl2(pyridine)4]Cl are prepared by heating rhodium trichloride with an excess of pyridine in the presence of a catalytic amount of a reductant.