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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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For syntheses mixed ligand complexes (MLCs) of REE carboxylates with amino ligands we used new approach - interaction of lanthanum, cerium, lutetium and yttrium nitrates with [LHxx+][Carb-]x ion pairs (HCarb = acetic, propionic, pivalic (HPiv), trifluoric acids; L = monoethanolamine (MEA), ethylenediamine (En), diethylenetriamine (DETA) in acetonitrile. Existence of ion pairs in solutions was proved by potentiometry, ESIMS, 1H NMR. The thermodynamic stability of REE carboxylates plays key role in formation of MLCs by interaction with ion pairs. New solid MLCs with unique X-ray crystal structures: [Ce(Piv)5(MEAH+)][MEAH+], [Y(Piv)2(DETA)2](NO3), [Ce6(O)8(Piv)8(DETA)4], have been presented.