基于2,2’-联吡啶-5,5’-二羧酸配合物的合成及其表征 |
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引用本文: | 高 科,程清蓉,潘志权.基于2,2’-联吡啶-5,5’-二羧酸配合物的合成及其表征[J].武汉工程大学学报,2020,42(5):487-490,500. |
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作者姓名: | 高 科 程清蓉 潘志权 |
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作者单位: | 武汉工程大学化学与环境工程学院,湖北 武汉 430205 |
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摘 要: | 为了探索芳香族二羧酸的配位性能,评价金属镉离子与芳香族二羧酸配位几何结构对其骨架的影响,基于2,2’-联吡啶-5,5’-二羧酸配体,通过溶剂热法成功合成了配合物 {[Cd(L)]·DMF·0.5H2O}n。并通过傅里叶红外光谱、X-射线单晶衍射和热重分析仪对镉配合物的晶体结构和热稳定性能进行了测试。结果表明:Cd离子与配体采用六配位模式,晶体属于单斜晶系P2(1)/c空间群;在400 ℃ 前,配合物骨架并未分解,475 ℃ 后配合物热降解曲线趋于平稳,表明配合物具有较高的热稳定性。本研究为2,2-联吡啶-5,5-二羧酸基MOFs材料的合成提供了一定的参考。
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关 键 词: | 2 2’-联吡啶-5 5’-二羧酸 镉配合物 晶体结构 热稳定性 |
Synthesis and Characterization of 2,2’-Bipyridine-5,5’-Dicarboxylic Acid-Based Complex |
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Authors: | GAO Ke CHENG Qingrong PAN Zhiquan |
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Affiliation: | School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China |
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Abstract: | To further understand the coordination chemistry of aromatic dicarboxylic acid, and to evaluate the influence of coordination between aromatic dicarboxylic acid and Cd(Ⅱ) on the framework, the complex of {[Cd(L)]·DMF·0.5H2O}n was synthesized via solvothermal method. Crystal structure and thermal stability of the complex were characterized by Fourier transform infrared spectroscopy, single crystal X-ray diffraction, and thermogravimetric analysis. The results showed that Cd (Ⅱ) ion in the complex is hexacoordinated, which belongs to monoclinic crystal system with space group P2(1)/c. Furthermore, the thermogravimetric analysis indicated that the complex exhibits excellent thermal stability, since the metal-organic framework is not decomposed even at 400 ℃, and the thermal degradation curve of the complex is stabilized at temperatures above 475 ℃. The work provided some references for synthesis of the metal-organic frameworks with 2,2’-bipyridine-5,5’-dicarboxylic acid. |
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Keywords: | 2 2’-bipyridine-5 5’-dicarboxylic acid cadmium complex crystal structure thermal stability |
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