2005/10/07 by Melissa A. Denecke, André Roßberg, Petra J. Panak +3 · 1 citation
Chemistry · Materials Science · #Radioactive element chemistry and processing #Lanthanide and Transition Metal Complexes #Analytical chemistry methods development
paper · doi:10.1021/ic0511726
openalex publication_date 2005/10/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/16
The complexation of Cm(III) and Eu(III) with 2,6-di(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine (n-C3H7-BTP) in nonaqueous organic solution is studied with extended X-ray absorption spectroscopy. Bond lengths are the same in both complexes. Quantum-chemical calculations performed at different levels support this finding. On the other hand, the Cm.(n-C3H7-BTP)3 complex is formed at much lower ligand-to-metal concentration ratio than the Eu.(n-C3H7-BTP)3 complex, as shown by time-resolved laser-induced fluorescence spectroscopy. This is in good agreement with n-C3H7-BTP's high selectivity for trivalent actinides over lanthanides in liquid-liquid extraction.