基于吡啶2,5二甲酸的铽配位聚合物合成、表征及动力学分析  

Synthesis,Characterization and Kinetic Analysis of a New Terbium Complex Based on Pyridine 2,5-dicarboxylic Acid

作　　者：解凤霞[1] 张欣欣[1] 张丹[1] 华敏[1] 张逢星[2] 

机构地区：[1]西安工程大学环境与化学工程学院,西安710048 [2]西北大学化学与材料科学学院,西安710069

出　　处：《人工晶体学报》2013年第10期2207-2212,共6页Journal of Synthetic Crystals

基　　金：西安工程大学校博士基金(BS0902)

摘　　要：以Tb(NO3)3·6H2O、吡啶-2,5-二甲酸(H2pydc)为原料,合成了一个新型中心对称的三维配位聚合物{(H3O)[Tb(pydc)2]}n。经X射线单晶衍射、元素分析、红外光谱、热重分析,荧光光谱等对配合物的结构进行表征。在配位单元[Tb(pydc)2]-中,Td(III)离子与吡啶-2,5-二甲酸配体上的N原子、O原子配位形成八配位的十二面体构型。相邻的两个Td(III)离子通过吡啶-2,5-二甲酸的桥连作用形成三维网状结构。荧光光谱实验表明该化合物在546 nm处有强的荧光发射。另外对配合物的分解过程进行了动力学分析。A new terbium complex {（H3O） [Tb（pydc）2 ] }, was synthesized using Tb（NO3）3. 6H2O and pyridine 2,5- dicarboxylic acid as raw materials. The structure and property of the title complex were characterized by elemental analysis, thermal analyses, IR spectra and fluorescence. Single-crystal X-ray diffraction analysis indicated that the crystal belongs to orthorhombic, space group Pbcn. The single crystal structure shows that the title complex has three-dimensional channel structure. The coordination number of central ion Tb （ Ⅲ ） is eight. The title complex exhibits intense luminescence in the liquid state at room temperature. In addition, thermal stability and dynamics of the title complex were analyzed and pyrolysis kinetic parameters were obtained.

关 键 词：稀土配合物 吡啶-2 5-二甲酸 晶体结构 动力学 

分 类 号：O614.33[理学—无机化学]