The UO2SeO4-CO(NH2)(2)-H2O and UO2CrO4-CO(NH2)(2)-H2O systems were studied
by the isothermal solubility technique at 25 degrees C. The effect of tetra
hedral oxoanion on complex formation in the UO2XO4-CO(NH2)(2)-H2O (X = S, S
e, Cr) systems was discussed. The results were compared with those for the
corresponding acetamide complexes.