Americium(III) and europium(III) solvent extraction studies of amide-substituted triazine ligands and complexes formed with ytterbium(III)

被引:56
作者
Boubals, N
Drew, MGB [1 ]
Hill, C
Hudson, MJ
Iveson, PB
Madic, C
Russell, ML
Youngs, TGA
机构
[1] Univ Reading, Dept Chem, Reading RG6 6AD, Berks, England
[2] DEN DRCP SCPS LCSE, Commissariat Energy Atom, F-30207 Bagnols Sur Ceze, France
来源
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 2002年 / 01期
关键词
D O I
10.1039/b104181a
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
4-Amino-bis(2,6-(2-pyridyl))-1,3,5-triazine L-4 and several, amide derivatives with hydrophobic alkyl substituents have been synthesised. Solvent extraction studies carried out on Am(III) and Eu(III) with L-4 and its amide derivatives in synergistic combination with alpha-bromodecanoic acid, show that these ligands can selectively extract actinides with respect to lanthanides. The structures of [H2L4].2Cl.2.5H(2)O and two amide derivatives have been determined and show respectively the trans, trans; cis, cis; and cis, trans conformations of the adjacent aromatic rings. These observed conformations are in agreement with the results of quantum mechanics calculations on L-4 and its protonated derivatives. The structures of two Yb complexes with amide derivatives are also reported with stoichiometry [Yb(L)(NO3)(H2O)(4)].2NO(3).0.5H(2)O and [Yb(L)(NO3)(3)(H2O)].2MeCN and show the metal in 9 coordinate environments.
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页码:55 / 62
页数:8
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