Ceric molybdate

A number of salts of a cerimolybdic acid have been prepared, analogous to the complex molybdates of zirconium and thorium. Ammonium cerimolybdate, (NH₄)₈[Ce(Mo₂O₇)₆].8H₂O, is a yellow crystalline substance, yielding yellow solutions which are stable towards hydrogen peroxide and give a precipitate with oxalic acid only after prolonged boiling. The acid ammonium salt (NH₄)₆H₂[Ce(Mo₂O₇)₆].10H₂O, the silver salt, Ag₈[Ce(Mo₂O₇)₆], and the acid aniline salt are also known.