两个基于2,2’-联吡啶-3,3’-二羧酸的稀土配合物的晶体结构和荧光性质
Synthesis, Structure, Properties of Two Rare Earth Complexes Based on 2,2’-Bipyridine-3,3’-dicarboxylic Acid
作者单位E-mail
张玲娟 北京化工大学理学院, 北京 100029  
韩春英 北京化工大学理学院, 北京 100029  
张丽丹 北京化工大学理学院, 北京 100029 zhangld@mail.buct.edu.cn 
郝戬 北京化工大学理学院, 北京 100029  
史天柱 北京化工大学理学院, 北京 100029  
摘要: 采用水热法合成了2个具有二维结构的吡啶羧酸类稀土配位聚合物{[Ln2(bpdc)3(H2O)2]·5H2O}n,(Ln=Nd(1),Eu(2);bpdc=2,2'-Bipyridyl-3,3'-dicarboxylic acid)。单晶衍射分析显示12结构相似,均属于单斜晶系,P2/c空间群。12的晶胞参数分别为a=1.241 00(19) nm,b=0.748 35(59) nm,c=2.060 50(20) nm,β=94.84(1)°;a=1.241 00(19) nm,b=0.743 01(20) nm,c=2.052 50(30) nm,β=94.95(2)°。配合物是由之字形一维链构成的二维网络结构,其拓扑符号为{3^9;4^18;5}。热重测试结果表明12热稳定性较好。配合物2显示出很好的荧光性能。
关键词: 稀土  2,2’-联吡啶-3,3’-二羧酸  晶体结构  荧光性能
基金项目: 化工资源有效利用国家重点实验室资助项目。
Abstract: Two rare earth coordination polymers {[Ln2(bpdc)3(H2O)2]·5H2O}n, (Ln=Nd(1), Eu(2); bpdc=2,2'-Bipyridyl-3,3'-dicarboxylic acid) were hydrothermally synthesized. Single-crystal X-ray diffraction shows that 1 and 2 are isomorphic and in the monoclinic system with P2/c group. Crystal unit parameters are a=1.241 00(19) nm,b=0.748 35(59) nm,c=2.060 50(20) nm,β=94.84(1)° and a=1.241 00(19) nm,b=0.743 01(20) nm,c=2.052 50(30) nm,β=94.95(2)° respectively. In addition, the complexes afforded a two-dimensional (2D) structure based on the zigzag chains(1D) linked by bpdc ligands and appear 8-coordinated single network structure with topology symbol {3^9;4^18;5} as well. Interestingly, pentameric water rings were founded between lattice water molecules in 1 and 2. Thermo-gravimetric analyses of 1 and 2 display considerable thermal stability. The complex 2 displays good fluorescence property. CCDC: 925994,1; 925995,2.
Keywords: rare earth  2,2’-bipyridyl-3,3’-dicarboxylic acid  crystal structure  fluorescence property
投稿时间:2013-05-16 修订日期:2014-04-04
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张玲娟,韩春英,张丽丹,郝戬,史天柱.两个基于2,2’-联吡啶-3,3’-二羧酸的稀土配合物的晶体结构和荧光性质[J].无机化学学报,2014,30(8):1904-1910.
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