基于吡啶二羧酸配体的稀土配合物的合成、结构及性质  

Synthesis,Structure,and Properties of Rare⁃Earth Complexes Based on Pyridine Dicarboxylic Acid Ligands

作　　者：王胜[1] 黄瑞琴 王绍聪 刘峥[1] 唐群[1] WANG Sheng;HUANG Rui-Qin;WANG Shao-Cong;LIU Zheng;TANG Qun(Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials,College of Chemical and Biological Engineering,Guilin University of Technology,Guilin,Guangxi 541004,China)

机构地区：[1]桂林理工大学化学与生物工程学院,电磁化学功能物质广西区重点实验室,桂林541004

出　　处：《无机化学学报》2022年第8期1663-1671,共9页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21501033);广西自然科学基金(No.2020GXNSFAA159016)资助。

摘　　要：以2,6-二甲基吡啶-3,5-二羧酸(H_(2)L_(1))为主配体,1,10-菲咯啉(L_(2))为辅配体,分别与五水合硝酸镝、六水合硝酸铽及六水合硝酸铕通过水热法合成[Dy_(2)(L_(1))_(3)(L_(2))_(2)]_(n)(1)、{[Tb_(2)(L_(1))_(3)(L_(2))_(2)]·5H_(2)O}_(n)(2)和{[Eu_(2)(L_(1))_(3)(L_(2))_(2)]·5H_(2)O}_(n)(3)三种配合物。通过单晶X射线衍射、红外光谱、荧光光谱和热重分析对其结构进行了表征与性质研究。结果表明,配合物1~3均以稀土离子为金属节点连接配体L_(1)^(2-)和L_(2),形成无限延伸的一维链状结构。The_(2),6-lutidine-3,5-dicarboxylic acid(H_(2)L_(1))was used as the main ligand,1,10-phenanthroline(L_(2))as the auxiliary ligand,and the complexes[Dy_(2)(L_(1))_(3)(L_(2))_(2)]n(1),{[Tb_(2)(L_(1))_(3)(L_(2))_(2)]·5H_(2)O}_(n)(2),and{[Eu_(2)(L_(1))_(3)(L_(2))_(2)]·5H_(2)O}_(n)(3)were synthesized by solvothermal reaction with dysprosium nitrate pentahydrate,terbium nitrate hexahydrate,and europium nitrate hexahydrate,respectively.The structures and properties of the complexes were characterized by single-crystal X-ray diffraction,IR,fluorescence spectroscopy,and thermogravimetric analysis.The results show that complexes 1-3 all use rare-earth ions as metal nodes to connect with ligands L_(1)^(2-)and L_(2)to form an infinitely extending 1D chain structure.CCDC:2107136,1;2109709,2;2109716,3.

关 键 词：稀土配合物 吡啶二羧酸 1 10-菲咯啉 晶体结构 

分 类 号：O614.342[理学—无机化学] O614.341[理学—化学] O614.338