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Issue 1, 2002
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Americium(III) and europium(III) solvent extraction studies of amide-substituted triazine ligands and complexes formed with ytterbium(III)

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Abstract

4-Amino-bis(2,6-(2-pyridyl))-1,3,5-triazine L4 and several, amide derivatives with hydrophobic alkyl substituents have been synthesised. Solvent extraction studies carried out on Am(III) and Eu(III) with L4 and its amide derivatives in synergistic combination with α-bromodecanoic acid, show that these ligands can selectively extract actinides with respect to lanthanides. The structures of [H2L4]·2Cl·2.5H2O 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 L4 and its protonated derivatives. The structures of two Yb complexes with amide derivatives are also reported with stoichiometry [Yb(L)(NO3)(H2O)4]·2NO3·0.5H2O and [Yb(L)(NO3)3(H2O)]·2MeCN and show the metal in 9 coordinate environments.

Graphical abstract: Americium(iii) and europium(iii) solvent extraction studies of amide-substituted triazine ligands and complexes formed with ytterbium(iii)

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Publication details

The article was received on 11 May 2001, accepted on 22 Oct 2001 and first published on 03 Dec 2001


Article type: Paper
DOI: 10.1039/B104181A
Citation: J. Chem. Soc., Dalton Trans., 2002,0, 55-62
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    Americium(III) and europium(III) solvent extraction studies of amide-substituted triazine ligands and complexes formed with ytterbium(III)

    N. Boubals, M. G. B. Drew, C. Hill, M. J. Hudson, P. B. Iveson, C. Madic, M. L. Russell and T. G. A. Youngs, J. Chem. Soc., Dalton Trans., 2002, 0, 55
    DOI: 10.1039/B104181A

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