Calixarene-Based Picolinamide Extractants for Selective An/Ln Separation from Radioactive Waste
作者:Alessandro Casnati、Nicola Della Ca'、Marco Fontanella、Francesco Sansone、Franco Ugozzoli、Rocco Ungaro、Karine Liger、Jean-Francois Dozol
DOI:10.1002/ejoc.200400793
日期:2005.6
Eleven novel ligands having picolinamide or thiopicolinamide bindinggroups at the upper or lowerrim of calix[4]-, calix[6]- and calix[8]arenes have been synthesised. The conformational properties of some of these ligands were studied in solution by means of NMR spectroscopy and in the solid state by X-ray diffraction. Their ability to extract AmIII or EuIII from water to NPHE (o-nitrophenyl hexyl
Calix[6]arene-Picolinamide Extractants for Radioactive Waste Treatment: Effect of Additional Carboxy Binding Sites in the Pyridine 6-Positions on Complexation, Extraction Efficiency and An/Ln Separation
of the pyridine nuclei of calixarene-based picolinamide ligands on the extraction and complexation properties of lanthanide(III) and actinide(III) metal ions was studied. For this purpose, six new ligands 1–6 were synthesized; their conformational properties were studied both in solution and in the solid state, and their binding properties towards lanthanide (LnIII) and actinide (AnIII) metal ions were