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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。
In this work, Eu (DMBM) 2 (2,2’-bipy) NO_3 (DMBM = 2-methoxybenzoylmethane and 2,2’-bipy-2,2’-bipyridine) was synthesized for the first time. The synthesized compounds were characterized by elemental analysis, thermospectroscopy, conductivity, infrared and Raman spectroscopy and proton nuclear magnetic resonance spectroscopy. The excitation and emission spectra of the solid complexes were determined at 77K. The spectral data shows that the complex contains two Eu (Ⅲ) sites. The distribution of the three ligands in the complex around Eu (Ⅲ) is slightly different, showing different crystal field effects. The spectral data showed that the Eu (Ⅲ) sites in the complex belonged to non-centrosymmetric point group C_1 or C_3 or C_2.