Synthesis and properties of a Pr(III) complex with 2-acetyl- benzimidazoledehyde-glycine Schiff-base ligand
Synthesis and properties of a Pr（Ⅲ） complex with 2-acetylbenzimidazoledehyde-glycine Schiff-base ligand

The 2-acetyl-benzimidazoledehyde-glycine Schiff-base ligand and the corresponding Pr(III) complex Pr2L3(NO3)3) · 2CH3OH (L=C11H10N3O2) were synthesized in methanol and characterized by a series of methods, including chemical analysis, elemental analysis, TOF-MS, 1H NMR, UV-, IR-, Raman spectra, thermal analysis, and the three-dimension fluorescence excitation and emission spectra. The Pr(III) complex exhibits extraordinary water-solubility and the Pr(III) hydroxide appears at pH 13. The complex also possesses specific fluorescent properties. Thus, at the excitation wavelengths 200.0–280.0 and 260–350 nm the fluorescence bands were observed at 290.0 and 400.0 nm, respectively.