Rhodium Molybdates

Complex rhodimolybdates, of the type 3R^•₂O.Rh₂O₃.12MoO₃.xH₂O, and analogous to the corresponding compounds of aluminium, iron, chromium, and cobalt, have been described. The ammonium salt, 3(NH₄)₂O.RH₂O₃.12MoO₃.20H₂O, crystallises in minute yellow laminae. The potassium salt is similar in appearance and composition.