| 2个具有四重穿插框架和dia网络的5-羟甲基间苯二甲酸类Zn(Ⅱ)配位聚合物的合成、结构和荧光性质 |
| Two Zinc(Ⅱ) Coordination Polymers with 4-Fold Interpenetration Frameworks and dia Nets Based on 5-(Hydroxymethyl) Isophthalic Acid: Syntheses, Crystal Structures and Fluorescence Properties |
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| 摘要: 在溶剂热条件下，5-羟甲基间苯二甲酸（5-（hydroxymethyl）isophthalic acid，H2HIPA）和锌离子分别与1，4-双（2-甲基-1氢-咪唑-1-基）苯（1，4-bis（2-methyl-1H-imidazol-1-yl）benzene，1，4-BMIB）以及1，2-二（吡啶-4-基）乙烯（1，2-di（pyridin-4-yl）ethene，dpee）反应得到2个三维的配位聚合物[Zn（HIPA）（1，4-BMIB）]n（1）和{[Zn（HIPA）（dpee）]·0.5dpee}n（2）。单晶衍射揭示在配合物1中，锌离子中心呈现一个略微变形的四面体配位构型，而HIPA2-和1，4-BMIB为简单连接体，构建出具有四重穿插和dia网络的框架。在2中，锌离子中心以五角双锥构型作为四连接节点分别连接2个HIPA2-和dpee配体，仍然是一个具有dia网络的四重穿插框架。此外，dpee不仅作为辅助配体参与构建配合物2，而且还以客体分子的形式存在。固体紫外-可见光谱显示1和2在紫外区有强的吸收，同时固体荧光测试揭示它们具有蓝色荧光特征，分别在414和440 nm附近有强的荧光发射峰。 |
| 关键词: 锌配合物 5-羟甲基间苯二甲酸 四重穿插结构 dia网络 荧光性质 |
| 基金项目: 国家自然科学基金（No.21761036）和贵州省自然科学基金（No.20181181）资助项目。 |
| Abstract: Under solvothermal condition, 5-(hydroxymethyl) isophthalic acid (H2HIPA) and Zn(Ⅱ) ions reacted with 1,4-bis(2-methyl-1H-imidazol-1-yl) benzene (1,4-BMIB) and 1,2-di(pyridin-4-yl)ethene (dpee) to obtain two coordination polymers[Zn(HIPA)(1,4-BMIB)]n (1) and {[Zn(HIPA)(dpee)]·0.5dpee}n (2), respectively. Single crystal X-ray diffraction analyses reveal that Zn(Ⅱ) center adopts a slightly distorted tetrahedral geometry in complex 1. And then, Zn (Ⅱ) ions are further connected together by HIPA2- and 1, 4-BMIB ligands to form a 3D framework with nano-channels, which is up to 1.2 nm×2.0 nm. For such a very empty framework, structural interpenetration is difficult to avoid. Further analysis finds that the whole framework of complex 1 is a 4-fold interpenetration structure. From a topological viewpoint, the Zn(Ⅱ) ions are 4-connected nodes, whilst HIPA2- and 1,4-BMIB ligands are simple linkers. So, the whole framework of 1 is topologically represented as a 4-connected dia net. Although the Zn(Ⅱ) center in complex 2 has a different pentagonal bipyramid model, the HIPA2- and dpee as simple linkers are connected by two Zn (Ⅱ) centers, respectively. Therefore, the final framework of 2 is still a 4-fold interpenetration dia net like 1. Furthermore, the dpee not only participates in constructing the framework as auxiliary ligand, but also exists in complex 2 as guest molecule. UV-Vis spectra showed that complexes 1 and 2 had strong absorption spectra in ultraviolet region, while solid fluorescence measurements revealed that they possessed blue fluorescence properties with emission peaks at about 414 and 440 nm, respectively. |
| Keywords: zinc(Ⅱ) complex 5-(hydroxymethyl) isophthalic acid 4-fold interpenetration structure dia net fluorescence property |
| 投稿时间：2020-05-04 修订日期：2020-06-25 |
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| 徐中轩,李立凤,徐仕菲,陈雪婷.2个具有四重穿插框架和dia网络的5-羟甲基间苯二甲酸类Zn(Ⅱ)配位聚合物的合成、结构和荧光性质[J].无机化学学报,2020,36(11):2087-2092. |
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