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Thermal Decomposition Of Calcium Dioxodiaquaperoxymalonato Uranate(Vi) Hydrate

BBV Sailaja and MS Prasada Rao

Calcium dioxodiaquaperoxymalonatouranate was obtained by reaction of uranyl nitrate with malonic acid and then hydrogen peroxide in the presence of calcium ion. The complex was subjected to chemical analysis. The thermal decomposition behaviour of the complex was studied using TG, DTG and DTA techniques. The solid complex salt and the intermediate product of its thermal decomposition were characterized using IR absorption and X-ray diffraction spectra. Basing on the data from these physico-chemical investigations the structural formula of the complex was proposed as Ca[UO2(O2)(H2C3O4)(H2O)2].H2O