Three ternary complexes were synthesized from terbium with aromatic carboxylic acids(benzoic acid, salicylic acid, p-hydroxylbenzoic acid) and acrylonitrile and characterized by means of elemental analysis, FT-IR and ...Three ternary complexes were synthesized from terbium with aromatic carboxylic acids(benzoic acid, salicylic acid, p-hydroxylbenzoic acid) and acrylonitrile and characterized by means of elemental analysis, FT-IR and UV-Vis. Fluorescence spectra show the three ternary complexes exhibit good luminescence.展开更多
Binary and ternary complexes of Cd(II) involving pyrazine 2,3-dicarboxylic acid (pzdca) and various biologically relevant ligands containing different functional groups are investigated at 25 ℃, I = 0.10 M (NaNO...Binary and ternary complexes of Cd(II) involving pyrazine 2,3-dicarboxylic acid (pzdca) and various biologically relevant ligands containing different functional groups are investigated at 25 ℃, I = 0.10 M (NaNO3) and in 20% (v/v) ethanol-water media. The ligands (L) used are amino acids, dicarboxylic acids and peptides. The results showed the formation of Cd (pzdca) (L) complexes with amino acids and dicarboxylic acids. Peptides form both Cd (pzdca) (L) complexes and the corresponding deprotonated amide species Cd (pzdca) (LH-1). The relative stabilities of ternary complexes are compared with those of the corresponding binary complexes in terms of AlogK values. The concentration distribution of the complexes in solution was evaluated.展开更多
文摘Three ternary complexes were synthesized from terbium with aromatic carboxylic acids(benzoic acid, salicylic acid, p-hydroxylbenzoic acid) and acrylonitrile and characterized by means of elemental analysis, FT-IR and UV-Vis. Fluorescence spectra show the three ternary complexes exhibit good luminescence.
文摘Binary and ternary complexes of Cd(II) involving pyrazine 2,3-dicarboxylic acid (pzdca) and various biologically relevant ligands containing different functional groups are investigated at 25 ℃, I = 0.10 M (NaNO3) and in 20% (v/v) ethanol-water media. The ligands (L) used are amino acids, dicarboxylic acids and peptides. The results showed the formation of Cd (pzdca) (L) complexes with amino acids and dicarboxylic acids. Peptides form both Cd (pzdca) (L) complexes and the corresponding deprotonated amide species Cd (pzdca) (LH-1). The relative stabilities of ternary complexes are compared with those of the corresponding binary complexes in terms of AlogK values. The concentration distribution of the complexes in solution was evaluated.