【摘要】 合成了对甲基苯甲酸铕与2,2′-联吡啶的晶体配合物,元素分析表明配合物的化学式为Eu（p-MBA）₃dipy（p-MBA:对甲基苯甲酸根;dipy:2,2′-联吡啶）.用X射线衍射法测定了配合物的单晶结构,其结构式为Eu₂（p-MBA）₆（dipy）₂,属单斜晶系,C2/c空间群,晶胞参数:a=1.4086（6）,b=1.9115（11）,C=2.3077（16）nm;β=96.60（4）°,V=6.1727nm³,Z=4.对甲基苯甲酸根,2,2′-联吡啶均以双齿配位,中心铕离子的配位数为八,形成的配位多面体为三角十二面体.两个铕离子通过四个对甲基苯甲酸基桥联,形成双核配合物.利用配合物Eu（p-MBA）₃dipy在紫外光或可见光激发下,能发出很强荧光的特性,以Eu（Ⅲ）离子为光谱探针,77K下测得其高分辨激发和发射光谱及时间分辨光谱,光谱数据表明配合物中有两种Eu（Ⅲ）离子格位.更多还原

【Abstract】 The coordination compound of europium p-methylbenzoate with 2,2’-dipyridine was synthesized and characterized by elemental analysis and infrared spectrum. The crystal structure of the title compound, Eu2(p-MBA)6(dipy)2(p-MBA: p-methylbenzoate, dipy: 2,2’-dipyridine) was determined by the X ray diffraction analysis. It crystallizes in the monoclinic C2 / c system with unit cell dimensions a= 1.4086(6), b= 1.9115(11), c= 2.3077(16)nm; β= 96.60(4)°, V= 6.1727nm3 and Z=4. The metal atoms are octa-coordinated with the bidentates of p-methylbenzoate and 2,2’-dipyridine. Since the title coordination compound Eu(p-MBA)3 dipy fluoresces very intensely under ultraviolet or visible light. Using Eu(Ⅲ) ion as luminescent probe, the high-resolution laser excited excitation and luminescence spectra and time resolved spectra were recorded at 77K. The emission spectra indicate that two Eu(Ⅲ) ion sites are present in the compound.更多还原