Preparation and properties of uranyl bromate monohydrate
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Add time:07/28/2019 Source:sciencedirect.com
Uranyl bromate monohydrate UO2(BrO3)2 · H2O was obtained as a greenish-yellow solid by the metathesis of a uranyl sulfate solution with a stoichiometric amount of barium bromate solution. On evaporation of the supernatant of the precipitated BaSO4 a greenish-yellow syrup was obtained which, on dehydration with anhydrous carbon tetrachloride, yielded a freeflowing greenish-yellow powder with stoichiometry UO2(BrO3)2 · H2O. Powder diffraction diagrams of UO2(BrO3)2 · H2O obtained using the Guinier method yielded an orthorhombic lattice (space group, Pbcn (no. 60)) with a = 8.533 + 0.003 Å, b = 7.639 ± 0.003 Å and c = 12.293 ± 0.004 Å; the X-ray density was 4.507 g cm−3. The compound was characterized by chemical analysis, IR spectroscopy and differential thermal analysis.
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