Sequestering agent for uranyl chelation: new binaphtyl ligands |
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Authors: | Antoine LeydierDelphine Lecerclé ,Sté phane Pellet-Rostaing,Alain Favre-ReguillonFré dé ric Taran,Marc Lemaire |
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Affiliation: | a ICBMS, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, CNRS, UMR 5246, Université de Lyon, INSA, CPE, Laboratoire de Catalyse et Synthèse Organique, 43 Bd du 11 novembre 1918, Villeurbanne F-69622, France b Service de Chimie Bio-organique et de Marquage, iBiTec-S, CEA-Saclay, 91191 Gif sur Yvette, France |
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Abstract: | The synthesis of phosphonate, sulfocatecholamide (CAMS) and hydroxypyridinone (HOPO) binaphtyl ligands is presented. Their binding abilities for uranyl cation were determined by UV spectrophotometry in aqueous media versus pH. These titrations showed that the efficiency of these chelating agents depends on the nature of the chelating group. Each ligand shows a more or less pronounced affinity towards uranium. While the bisphosphonate compound did not show any affinity towards the uranyl ion, the BINHOPO derivative exhibits significant affinity at acidic and neutral pH while the BINCAMS is more efficient at basic pH. |
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Keywords: | CAMS Dipodal ligands Binol Chelates Actinides Uranium |
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