摘要
本工作首次合成了Eu(DMBM)_2(2,2′-bipy)NO_3(DMBM=二对甲氧基苯甲酰甲烷,2,2′-bipy-2,2′-联吡啶)。通过元素分析、热谱、电导率、红外和拉曼光谱、质子核磁共振谱对所合成化合物进行了表征。在77K测定了固体配合物的激发光谱和发光光谱。光谱数据说明配合物含有两种Eu(Ⅲ)格位。配合物中三种配体在Eu(Ⅲ)周围的分布情况略有不同,显示出不同的晶体场效应。光谱数据表明,配合物中Eu(Ⅲ)格位属于非中心对称的点群C_1或C_3或C_2。
The title compound, Eu(DMBM).(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 Ca 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.
出处
《感光科学与光化学》
CSCD
1992年第3期200-206,共7页
Photographic Science and Photochemistry
基金
中国科学院长春物理所激发态物理研究开放实验室基金
关键词
铕
配合物
表征
荧光光谱
europium, coordination coompound, characterization, luminescence
