Thermal decomposition of metal complexes. XI. Thermal properties and spectroscopic characteristics of the complexes of uranyl nitrate with several O-donor ligands

Abstract

The thermal decompositions in the solid state of some uranyl nitrate adducts with O-donor ligands were investigated and the corresponding activation energy. E ≠ a, values were calculated. The IR spectra of the adducts show that the donor ligands shift differently the antisymmetric stretching vibration of the OUO group. A linear correlation between E ≠ a and ν 3 values was found and the corresponding equation was calculated. The results obtained indicate a lesser stability of the O-donor adducts with respect to previously studied N-donor adducts.