| 基于2,5-二溴对苯二甲酸配体的锌/钴配合物合成、晶体结构及性质 |
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| 引用本文： | 黄瑞琴,王胜,刘峥,唐群,魏润芝.基于2,5-二溴对苯二甲酸配体的锌/钴配合物合成、晶体结构及性质[J].人工晶体学报,2022,51(11):1944-1951. |
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| 作者姓名： | 黄瑞琴 王胜 刘峥 唐群 魏润芝 |
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| 作者单位： | 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 541006 |
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| 基金项目： | 国家自然科学基金(21501033);广西自然科学基金(2020GXNSFAA159016) |
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| 摘 要： | 将有机物2,5-二溴对苯二甲酸(H2L1)和2,2′-联吡啶(L2)作为双配体,使用溶剂热法和七水合硫酸锌(ZnSO4·7H2O)、六水合硝酸钴(Co(NO3)2·6H2O)分别反应,得到配合物Zn(L1)(L2)(H2O)]n(1)和配合物Co(L1)(L2)(H2O)]n(2)。采用单晶X射线衍射、元素分析、红外光谱、紫外光谱、荧光光谱、热重分析等测试方法对这两种物质进行分析研究。单晶测试结果表明配合物1是单斜晶系,以Zn2+配位连接L2-1与L2形成一维链状结构,各条链在分子间氢键和π…π共轭作用下有规律地堆叠形成三维网络结构。配合物2是三斜晶系,Co1离子和Co1i离子由H2L1上的羧酸氧原子O4和O4i连接,形成双齿螯合的配位结构单元,以Co2+配位连接 L2-1和L2形成二维网格结构,各层在O—H…O分子间氢键和范德瓦耳斯力作用下有规律的堆叠形成三维网络结构。配合物1和2均含有芳香杂环、羧基杂环和氮杂环,具有良好的荧光性质和热稳定性,最大发射波长分别为345 nm和333 nm。
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| 关 键 词： | 锌配合物 钴配合物 溶剂热法 2 5-二溴对苯二甲酸 晶体结构 荧光性质 热稳定性 |
| 收稿时间： | 2022-07-21 |
Synthesis,Crystal Structure and Properties of Zn/Co Complexes Based on 2, 5-Dibromoterephthalic Acid Ligands |
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| HUANG Ruiqin,WANG Sheng,LIU Zheng,TANG Qun,WEI Runzhi.Synthesis,Crystal Structure and Properties of Zn/Co Complexes Based on 2, 5-Dibromoterephthalic Acid Ligands[J].Journal of Synthetic Crystals,2022,51(11):1944-1951. |
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| Authors: | HUANG Ruiqin WANG Sheng LIU Zheng TANG Qun WEI Runzhi |
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| Affiliation: | Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemical and Biological Engineering, Guilin University of Technology, Guilin 541006, China |
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| Abstract: | In our group, the organic compounds 2,5-dibromoterephthalic acid (H2L1) and 2,2′-bipyridine (L2) were used as biligands to react with zinc sulfate heptahydrate (ZnSO4·7H2O) and cobalt nitrate hexahydrate (Co(NO3)2·6H2O), respectively, using solvothermal method to obtain a zinc complex Zn(L1)(L2)(H2O)]n (1) and a cobalt complex Co(L1)(L2)(H2O)]n (2). The structural characterization and properties measurement were performed by single crystal X-ray diffraction, elemental analysis, infrared spectroscopy, ultraviolet spectroscopy, fluorescence spectroscopy, thermogravimetric analysis and other tests. The results show that complex 1 is a monoclinic crystal system with one-dimensional chain structure formed by the coordination of Zn2+ linking L2-1 and L2, each chain forming a three-dimensional network structure by regular stacking under intermolecular hydrogen bonding and π…π conjugation. Complex 2 is a triclinic crystal system with Co1 and Co1i ions linked by carboxylic acid oxygen atoms O4 and O4i on H2L1 to form a bidentate chelated ligand structural unit. A two-dimensional lattice structure is formed with Co2+ ligands connecting L2-1 and L2, and the layers are regularly stacked under O—H…O intermolecular hydrogen bonding and van der Waals forces to form a three-dimensional network structure. Both complexes 1 and 2 contain aromatic heterocycles, carboxyl heterocycles and nitrogen heterocycles, they have good fluorescence property and thermal stability, the maximum emission wavelengths of complex 1 and complex 2 are 345 nm and 333 nm, respectively. |
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| Keywords: | zinc complex cobalt complex solvothermal method 2 5-dibromoterephthalic acid crystal structure fluorescence property thermal stability |
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