无机化学学报2024,Vol.40Issue(6) :1143-1150.DOI:10.11862/CJIC.20230271

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

罗小玲 邹品田 王小燕 刘峥 孔翔飞 唐群 王胜
无机化学学报2024,Vol.40Issue(6) :1143-1150.DOI:10.11862/CJIC.20230271

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

罗小玲 1邹品田 2王小燕 1刘峥 1孔翔飞 1唐群 1王胜1
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作者信息

  • 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
  • 折叠

摘要

采用溶剂热法,以2,5-二溴对苯二甲酸(H2L)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):{[Nd2(L)3(DMF)2(H2O)2]·2DMF}n(1)和{[Gd2(L)3(DMF)2(H2O)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.

Abstract

The present report deals with the synthesis of the two MOFs of respective formula {[Nd2(L)3(DMF)2(H2O)2]·2DMF}n(1)and {[Gd2(L)3(DMF)2(H2O)2]·2DMF}n(2)were synthesized by solvothermal method using 2,5-dibromo-terephthalic acid(H2L)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:2054012,1;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

Key words

lanthanide series/2,5-dibromoterephthalic acid/metal-organic framework/crystal structure

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基金项目

桂林市科学研究与技术研发计划(2022118-1)

出版年

2024
无机化学学报
中国化学会

无机化学学报

CSTPCDCSCD北大核心
影响因子:0.665
ISSN:1001-4861
参考文献量30
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