基于2,5-二溴对苯二羧酸配体的镧系金属有机骨架的合成、结构及性质  

Synthesis,crystal structures,and properties of lanthanide metal-organic frameworks based on 2,5-dibromoterephthalic acid ligand

作　　者：罗小玲 邹品田 王小燕 刘峥[1] 孔翔飞[1] 唐群[1] 王胜[1] LUO Xiaoling;ZOU Pintian;WANG Xiaoyan;LIU Zheng;KONG Xiangfei;TANG Qun;WANG Sheng(College of Chemical and Biological Engineering,Guilin University of Technology,Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials,Guilin,Guangxi 541004,China;Guangxi Guilin RID Testing&Certification Group,Guilin,Guangxi 541100,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 [2]广西桂林锐德认证检测有限公司,桂林541100

出　　处：《无机化学学报》2024年第6期1143-1150,共8页Chinese Journal of Inorganic Chemistry

基　　金：桂林市科学研究与技术研发计划项目(No.2022118-1)资助。

摘　　要：采用溶剂热法,以2,5-二溴对苯二甲酸(H_(2)L)为配体,分别与六水合硝酸钕、六水合硝酸钆反应合成了_(2)种镧系金属有机骨架(MOFs):{[Nd_(2)(L)_(3)(DMF)_(2)(H_(2)O)_(2)]·_(2)DMF}n(1)和{[Gd_(2)(L)_(3)(DMF)_(2)(H_(2)O)_(2)]·2DMF}n(_(2))。通过单晶X射线衍射、粉末X射线衍射、红外光谱、元素分析、荧光光谱、热重分析等测试方法对其进行了结构表征与性质研究。结果表明,2个配合物均是以稀土离子为金属节点,与配体相互连接,形成无限延伸的三维网状结构。The present report deals with the synthesis of the two MOFs of respective formula{[Nd_(2)(L)_(3)(DMF)_(2)(H_(2)O)_(2)]·2DMF}n(1)and{[Gd_(2)(L)_(3)(DMF)_(2)(H_(2)O)_(2)]·_(2)DMF}n(_(2))were synthesized by solvothermal method using 2,5-dibromo-terephthalic acid(H_(2)L)as a ligand and reacting with neodymium nitrate hexahydrate and gadolinium nitrate hexahy-drate,respectively.The structures of both of them were elucidated by single-crystal X-ray diffraction and powder X-ray diffraction to demonstrate that complexes 1 and 2 crystallize in a similar space group P1 as a triclinic system with high crystal purity.Meanwhile,the complexes were characterized by elemental analysis,IR spectroscopy,UV-Vis absorption spectroscopy,fluorescence,and thermal analysis.Single-crystal X-ray diffraction analysis demon-strates the complexes are connected to the ligand with rare earth ions as metal nodes,forming an infinitely extended 3D network structure.CCDC:_(2)054012,1;2054067,2.

关 键 词：镧系 2 5-二溴对苯二甲酸 金属有机骨架 晶体结构 

分 类 号：O614.335[理学—无机化学] O614.339[理学—化学]