Spectroscopic investigation of adsorbed 7-(4-ethyl-1-methyloctyl)-8-quinolinol (kelex 100) and of its gallium(III) complex: Comparison with the behaviours observed in solvent extraction systems |
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| Authors: | Liliane Bokobza Gérard Cote |
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| Affiliation: | Laboratoire de Physico-Chimie Structurale et Macromoléculaire, E.S.P.C.I., 10 rue Vauquelin, 75231 Paris Cedex 05, France;Laboratoire de Chimie Analytique (Unité de Researche Associée au C.N.R.S. 437), E.S.P.C.I., 10 rue Vauquelin, 75231 Paris Cedex 05, France |
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| Abstract: | The adsorption of a long hydrocarbon chain oxine derivative, 7-(4-ethyl-1-methyloctyl)-8-quinolinol, on the macromolecular Amberlite XAD-7 support is shown by FT-IR spectroscopy to be the result of only weak extractant-support interactions. It is also shown that the chelation ability of the extractant towards gallium(III) does not suffer from the presence of the solid support. Finally the stereochemistry (fac or mer configuration) of the tris-7-(4-ethyl-1 -methyloctyl)-8-quinolinato gallium(III) complex formed either in solution in an organic diluent or on the support is discussed on the basis of 1H and 13C NMR and FIR data. |
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| Keywords: | Author to whom correspondence should be addressed. |
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