Abstract: The title compound, Eu(DMBM)₂(2,2’-bipy)NO₃(DMBM=di-p-methoxy-benzoylmetha-ne,2,2’-biby=2,2’-bipyridine),was synthesized and characterized with elemental analysis, thermal analysis, molar conductance, IR-Raman spectra and ¹HNMR spectra. Its high-resolution laser-excited excitation and luminescence spectra were measured at 77K. Two Eu(Ⅲ) ion sites have been probed. A detailed analysis of spectra reveales that there are two types of slightly unequivalent coordinated Eu(Ⅲ) ion moities with asymmetric C₁ or C_a or C₂ symmetry, differing in the distortion or more than one configurations of three types of ligand, experiencing slightly different crystal field effects in the compound.

Key words: europium, coordination coompound, characterization, luminescence