Synthesis and Study of Hexaamminecadmium Hydrogen Hexamolybdocobaltate(III) and Hexamolybdochromate(III)

摘要

Hexaamminecadmium hydrogen hexamolybdocobaltate(III) and hydrogen hexamolybdochro-mate(III) of compositions [Cd(NH_3)_6]·H[CoMo_6O_(18)(OH)_6]·6H_2O (I) and [Cd(NH_3)_6]·H[CrMo_6O_(18)(OH)_6]·6H_2O (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 A~3, ρ_(calc) = 2.37 g/cm~3, Z = 2; and for II: a = 10.80 A, b = 3.68 A, c = 11.97 A, β = 91.07°, V = 468.98 A~3, ρ_(calc) = 2.36 g/cm~3, Z = 2.