铕吡啶羧酸配合物[Eu(C_7H_3O_4N)(CH_3COO)(H_2O)]·2H_2O的合成、表征及其结构  

Synthesis,Characterization and Crystal Structure of Byridine Carboxylic Acid Complex [Eu(C_7H_3O_4N)(CH_3COO)(H_2O)]·2H_2O

作　　者：祈燕玲[1] 余坚[1] 黄丹[1] 郝志峰[1] 

机构地区：[1]广东工业大学轻工化工学院

出　　处：《光谱实验室》2008年第4期523-526,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：广东省自然科学基金资助项目(No.06021469)

摘　　要：在水热条件下,以2,5-吡啶二甲酸为配体合成得到稀土Eu3+为中心离子的配位聚合物[Eu(C7H3O4N)(CH3COO)(H2O)]·2H2O。用元素分析、红外光谱、单晶衍射对配合物的组成和结构进行了表征。晶体结构测试表明,标题配合物属于单斜晶系,空间群为P2(1)/c。在晶体结构中,构筑单位是含有Eu-Eu金属键的双核重复单元,六分子的吡啶二甲酸配体均以五齿配位的形式桥连4个Eu3+离子,从而将邻近的双核单元连接起来形成三维结构。A coordination polymer of rare earth Eu^3＋ ion with 2, 5-pyridine dicarboxylic acid ligand [Eu （C7H3O4N） （CH3COO） （H2O）] · 2H2O was synthesized under hydrothermal condition,and characterized by elemental analysis, IR spectra and X-ray diffraction. The crystal structure is a 3D coordination polymer, belongs to monoclinic and space group P2 （1）/c. In the crystal structure, polymer is constructed by duplicate dinuclear units which contains six 2,5-pdc ligands. The ligands which connect four Eu metals are all pentadentate. They bridge the adjacent units and make them into a 3D structure. Eu-Eu metal bond is observed in the repeated units.

关 键 词：铕配合物 吡啶二甲酸 晶体结构 

分 类 号：O657.33[理学—分析化学]