Ln(p-ABA)_3bpy·2H_2O的合成、晶体结构和光谱分析  

Crystal Structure and Spectra of Ln(p-ABA)_3bpy·2H_2O Complexes

作　　者：郑晓梅[1] 金林培[1] 王明昭[1] 张家骅 吕少哲 

机构地区：[1]北京师范大学化学系,北京100875 [2]中国科学院长春物理研究所

出　　处：《高等学校化学学报》1995年第7期1007-1011,共5页Chemical Journal of Chinese Universities

基　　金：国家科学技术委员会重大基础研究基金;中国科学院长春物理研究所激发态物理开放实验室资助课题

摘　　要：报道了Ln(p-ABA)_3bpy·2H_2O(Ln=Nd,Eu,Yb)的合成和晶体结构、拉曼光谱及荧光光谱的测定。晶体属三斜晶系,P(?)空间群。中心原子配位数为8。羧基具有单齿、螯合双齿和桥式3种配位方式。配合物的拉曼光谱与晶体结构测定结果吻合。Eu(p-ABA)_3bpy·2H_O的高分辨激发光谱和发射光谱表明,Eu(Ⅲ)离子仅有一种晶格格位,中心离子具有C_1格位对称性。Syntheses of Ln(p-ABA)3bpy·2H2O(Ln = Nd, Eu, Yb, p-ABA: p-aminoben-zoate, bpy: bipyridine) and their crystal structure, Raman and fluorescence spectra are re-ported. The crystal belongs to triclinic system with space group PL The coordination number of the central atom is eight. There are three coordinated modes for carboxylate groups: unidentate, bidentate and bridged. Raman spectra of the complexes indicate that there are more than one coordinated modes for the carboxylate groups. This is in good agreement with the result of X-ray analysis. The high resolution spectra of Eu(p-ABA)3bpy·2H2O show only one Eu(Ⅲ) ion site in the complex. The symmetry for the Eu(Ⅲ) site is C1.

关 键 词：配合物 晶体结构 稀土 钕 铕 镱 合成 

分 类 号：O614.33[理学—无机化学]