Synthesis and study of hexaamminecadmium hydrogen hexamolybdocobaltate(III) and hexamolybdochromate(III)

Hexaamminecadmium hydrogen hexamolybdocobaltate(III) and hydrogen hexamolybdochromate(III) of compositions [Cd(NH3)6] · H[CoMo6O18(OH)6] · 6H2O (I) and [Cd(NH3)6] · H[CrMo6O18(OH)6] · 6H2O (II), respectively, were synthesized and studied by mass spectroscopy, thermo-gravimetry, X-ray powder diffraction, and IR spectroscopy. Crystals of I and II are monoclinic. For I: a = 10.79 A, b = 3.70 A, c = 11.95 A, β = 91.05°, V = 470.12 A3, ρcalc = 2.37 g/cm3, Z = 2; and for II: a = 10.80 A, b = 3.68 A, c = 11.97 A, β = 91.07°, V = 468.98 A3, ρcalc = 2.36 g/cm3, Z = 2.