Complexes of U(VI) and Th(VI) with α- and β-alanines

Coordination compounds of α- and β-alanines with U(VI) and Th(IV) ions have been isolated. The formation of 1:1 and 1:2 (metal:ligand) complexes was identified in the case of uranyl ion while only 1:1 complexes were isolated with thorium ion. Elemental analysis, electrical conductance measurements, spectral measurements and IR spectral analysis were performed. The IR spectra showed that the ligands coordinate via the carboxylate and amino groups and revealed the presence of coordinated water molecules. (Auth.)