三个稀土配合物的制备、晶体结构及热分解性质  

Synthesis,Structure and Thermal Decomposition Properties of Three Rare Earth Complexes

作　　者：宗智慧 周飞亚 沈婧祎 王珊 梁丽丽 Zong Zhihui;Zhou Feiya;Shen Jingyi;Wang Shan;Lang Lili(Department of Chemistry,Bengbu Medical College,Bengbu,Anhui 233030)

机构地区：[1]蚌埠医学院公共基础学院,安徽蚌埠233030

出　　处：《绥化学院学报》2023年第8期153-157,共5页Journal of Suihua University

基　　金：安徽省高校自然科学研究重点项目“基于铁死亡的pH响应型靶向共递送纳米前药的构建及抗肝癌作用研究”(2022AH051465);蚌埠医学院512人才培养基金(by51201201);蚌埠医学院自然科学基金“可逆转MDR的肿瘤pH响应型纳米载药体系的构建及活性评价”(2020byzd046);蚌埠医学院自然科学基金“基于金属有机框架材料的环境响应型纳米给药系统的设计及抗肿瘤研究”(2020byzd048)

摘　　要：以3-硝基-4-(5-羟基-2,4-二硝基苯氧基)甲基苯甲酸(H_(2)L)为配体,采用溶剂热法制备了三种新型稀土配合物[Ln(HL)L(DMF)3]n,Ln=Eu(1),Gd(2),Tb(3)。用X-射线单晶衍射及X-射线粉末衍射等方法测定了其结构。三种配合物是同构的,属于单斜晶系Cc空间群,都是三维骨架结构,且结构中存在分子内氢键和的π-π相互作用。用TG-DSC测定了其在不同升温速率下的热分解过程,用Kissinger’s法和Ozawa-Doyle’s法计算了三种配合物的非等温热分解反应动力学参数,其表观活化能分别为171.850 kJ·mol–1、137.555 kJ·mol–1和149.500 kJ·mol–1。Using 4-((5-hydroxy-2,4-dinitrophenoxy)methyl)-3-nitrobenzoic acid(H_(2)L)as ligand,three novel complexes[Ln(HL)L(DMF)3]n,Ln=Eu(1),Gd(2),Tb(3)were prepared by a solvothermal method.The crystal structures were determined by X-ray single crystal diffraction and X-ray powder diffraction,and their thermal decomposition processes at different heating rates were determined by TG-DSC.The results show that the three complexes are isomorphic and belong to the monoclinic Cc space group,and all have stable three-dimensional dense network structures.In addition,the non-isothermal kinetics for 1-3 was studied by Kissinger’s and Ozawa-Doyle’s methods,the apparent activation energies of 1-3 are 171.850 kJ·mol-1,137.555 kJ·mol-1 and 149.500 kJ·mol-1,respectively.

关 键 词：金属有机骨架 镧系 3-硝基-4-(5-羟基-2 4-二硝基苯氧基)甲基苯甲酸 X-射线单晶衍射 热分析 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O64[理学—物理化学]