6533b7d3fe1ef96bd125feff

RESEARCH PRODUCT

Adamantylcalixarenes with CMPO groups at the wide rim: synthesis and extraction of lanthanides and actinides

Mikhail Yu. AlyapyshevA. E. MotornayaFrançoise Arnaud-neuElvira ShokovaVladimir KovalevIvan VatsouroVéronique Hubscher-bruderVolker BöhmerMaria KaravanVasily Babain

subject

Lanthanidechemistry.chemical_classificationChemistryLigandCarboxylic acidAdamantaneOrganic ChemistryExtraction (chemistry)ActinideBiochemistrychemistry.chemical_compoundNitric acidDrug DiscoveryMethyleneNuclear chemistry

description

Abstract Starting from p -adamantylcalix[4]- and [6]arenes functionalized with carboxylic acid or ester groups at the adamantane nuclei, carbamoylmethylphosphine oxide (CMPO)-containing ligands of a novel type were synthesized. They were studied as extractants for a series of f-block elements including radioactive 152 Eu(III), 241 Am(III), 233 U(VI), and 239 Pu(IV). Tetrameric ligand 4b in which CMPO residues are connected to adamantane nuclei through methylene groups gave the best extraction results for lanthanides and actinides. For all the ligands the extraction efficiency does not decrease at higher nitric acid concentration. Although the discrimination between trivalent actinides and lanthanides is not good, all ligands are highly selective for thorium(IV) with the best separation factor achieved in the case of hexameric ligand 5 ( D Th / D Ln >24).

yearjournalcountryeditionlanguage
2007-05-01Tetrahedron
https://doi.org/10.1016/j.tet.2007.03.088