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- 2017
具有开放骨架双核锌羧酸配合物的设计合成与结构表征
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Abstract:
选择含氮的有机羧酸配体1，3-di(3'，5'-dicarboxylphenyl)pyridine(C21H13NO8，H4L)，与过渡金属锌在DMA/CH3CN/H2O的混合溶剂热体系中配位组装，合成了一例具有3D开放骨架结构的双核锌金属羧酸配位化合物——Zn2(C21H9NO8)(H2O) (配合物1).用单晶X-射线衍射分析确定了其晶体学结构，配合物1结晶在正交晶系，P212121空间群(No.19)；有机羧酸衍生物配体H4L结构中的羧酸氧原子与金属锌螯合配位形成1个双核锌的次级结构单元，再通过有机配体的配位作用连接形成配合物1的三维开放骨架结构，沿y轴方向具有空旷的孔道结构.
The construction, crystal structure and properties of multinuclear metal carboxylate frameworks and their potential applications have attracted considerable attention worldwide. In this study, a novel open-framework binuclear zinc carboxylate, Zn2(C21H9NO8)(H2O) (compound 1), was constructed from 1, 3-di(3', 5'-dicarboxylphenyl)pyridine (H4L) with the transition metal zinc under DMA/CH3CN/H2O mixed solvothermal conditions. Single-crystal X-ray diffraction analysis revealed that compound 1 crystallized in the orthorhombic space group P212121 (No.19). The oxygen atoms in carboxylate chelated with Zn to form a secondary building unit (SBU) featuring binuclear zinc, and these SBUs were constructed by H4L further into the open-frameworks of compound 1 featuring extra-large channels along y axis
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