Structure of nickel uranyl acetate hexahydrate

As part of a study of uranium salts the authors prepared bright-green crystals of [Ni(H2O6][UO2(CH3COO)3]2 from stoichiometric amounts of nickel acetate and uranyl acetate dissolved in a dilute aqueous solution of acetic acid which was allowed to evaporate slowly in air. A crystal, approximately 0.10 x 0.15 x 0.20 mm, was selected for the intensity measurements. A Picker computer-controlled four-circle diffractometer equipped with a graphite monochromator and a Mo X-ray tube was used. The setting angles of 12 manually centered reflections, 420 < 2theta < 520, were used to determine the cell parameters. A theta-2theta scan technique was used to collect the integrated intensities. (Auth.)