Complexation of Am(iii) and Eu(iii) with DRAPA (N,N-dialkyl-6-amide-pyridine-2-carboxylic acid)

Abstract

The similarity of the coordination chemistry of Am(III) and Eu(III) and two homologous tridentate ligands, N,N-di-2-ethylhexyl-6-amide-pyridine-2-carboxylic acid (DEHAPA, HL′) in solvent extraction and N,N-dimethyl-6-amide-pyridine-2-carboxylic acid (DMAPA, HL) in aqueous solution and in the solid state, is revealed structurally and spectroscopically with complexes ML′₃ (org), ML₃ (aq) and ML₃ (s), respectively.