Synthesis and physicochemical study of hexaamminechromium(III) hexamolybdogallate

Hexaamminechromium(III) hexamolybdogallate of composition [Cr(NH 3)6][GaMo6O18(OH)6] • 5H2O (I) was synthesized and studied by mass spectrometry, IR spectroscopy, thermogravimetry, and X-ray diffraction. Crystals I are monoclinic: a = 11.77 Å, b = 10.97 Å, c = 15.49 Å, β = 115.11°, V = 1811.29 Å3, ρcalc = 1.17 g/cm3, Z = 1. The compound obtained was used as a catalyst for soft oxidation of natural gas at 633 K. © 2011 Pleiades Publishing, Ltd.