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Updated: Apr 4, 2026

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Coordination Chemistry of Europium(III) Ion Towards Acylpyrazolone Ligands
Maria Atanassova1, Vanya Kurteva, Isabelle Billard
1University of Chemical Technology and Metallurgy, Department of General and Inorganic Chemistry.
Abstract:
Two Eu(III) complexes were synthesized using 4-acylpyrazolone ligands: 3-methyl-4-(4-methylbenzoyl)-1-phenyl-pyrazol-5-one (HPMMBP) and 3-methyl-1-phenyl-4-(4-phenylbenzoyl)-pyrazol-5-one (HPPMBP). The composition of the obtained solid complexes was determined as Eu(PMMBP)3·C2H5OH and Eu(PPMBP)3·3H2O based on elemental analysis and was further studied by IR, NMR and TG-TSC data. The lanthanoid complexation in solid state and in solution during liquid-liquid extraction (molecular diluent and ionic liquid) is discussed.
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