Analytical Sciences

Abstract − Analytical Sciences, 31(9), 917 (2015).

Coordination Chemistry of Europium(III) Ion Towards Acylpyrazolone Ligands
Maria ATANASSOVA,*1,*4 Vanya KURTEVA,*2 and Isabelle BILLARD*3,*4
*1 University of Chemical Technology and Metallurgy, Department of General and Inorganic Chemistry, 8 Kliment Okhridski blvd., 1756 Sofia, Bulgaria
*2 Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev street, Block 9, BG 1113, Sofia, Bulgaria
*3 University of Grenoble Alpes, 38000 Grenoble, France
*4 CNRS, LEPMI, UMR 5279, 1130 rue de la piscine 38000 Grenoble, France
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.