Complexation of Lanthanide(III) and Actinide(III) Catins with Tridentate Nitrogen-Donor Ligands: A Luminescence and Spectrophotometric Study
| Autor: | N. Francois, J.-C. Krupa, S. Airvault, G. Lagarde, D. Guillaneux, M. Miguirditchian, D. Thauvin, S. Ducros, M. Illemassene, C. Madic |
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| Přispěvatelé: | Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Lanthanide
010308 nuclear & particles physics Inorganic chemistry 0211 other engineering and technologies chemistry.chemical_element Americium 02 engineering and technology Actinide 01 natural sciences Lutetium chemistry.chemical_compound Nuclear Energy and Engineering chemistry [CHIM.ANAL]Chemical Sciences/Analytical chemistry 0103 physical sciences Lanthanum 021108 energy Methanol Luminescence Europium |
| Zdroj: | Nuclear Science and Engineering Nuclear Science and Engineering, Academic Press, 2006, 153, pp.223-232 |
| ISSN: | 0029-5639 1943-748X |
| Popis: | RADIOCH; The complexation of Lanthanide(III) (lanthanum, europium, and lutenium) and americium(III) by four Nitrogen-Donor Ligands was investigated in homogeneous methanol/water solutions by using structural and thermodynamic approaches. The stoichiometry and inner-sphere hydration state of the europium complexes formed were determined by time-resolved laser-induced fluorimetry. The stability constants and in some cases the thermodynamic parameters were measured by ultraviolet-visible spectrophotometry and the van't Hoff method. The comparison of the stability constants of americium complexes with lanthanide complexes shows better stability for the actinide species. The strong affinity for these ligands towards Am ${+3} is confirmed by the formation of higher complexes, especially in the case of 2,6(5,6-dimethyl-1,2,4-triazin-3-yl)-pyridine (MeBTP), the only ligand able to form a 1:3 complex. The influence of the solvent composition on the complexation thermodynamics highlights the effect of the solvent reorganization on the reaction. |
| Databáze: | OpenAIRE |
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