%0 Journal Article %T Influence of Diluent on Extraction Parameters of Systems for Separation Am(III) and Ln(III) Based on 1,10-Phenanthroline-2,9-Diamide. %A Gerasimov MA %A Matveev PI %A Evsiunina MV %A Khult EK %A Kalle P %A Petrov VS %A Lemport PS %A Petrov VG %A Kostikova GV %A Ustynyuk YA %A Nenajdenko VG %J Molecules %V 29 %N 15 %D 2024 Jul 28 %M 39124953 %F 4.927 %R 10.3390/molecules29153548 %X A systematic study of extraction systems for the separation of f-elements using the tetradentate N,O-donor diamide of 1,10-phenanthroline-2,9-dicarboxylic acid (L) in various molecular and ionic solvents was performed. It was demonstrated that the nature of a diluent has a significant impact on solvent extraction of Am(III) and Ln(III) and the stoichiometry of formed complexes with f-elements. The mechanism of complexation and forms of complexes in different diluents were investigated by radiometric methods, UV-vis titration, and XRD.