基于4-羟基间苯二甲酸和含氮杂环配体的Zn(II)配合物的合成、晶体结构与荧光性质研究

摘要/Abstract

摘要： 在水热法条件下,4-羟基间苯二甲酸(H₂HPHA)和锌离子分别与1,2二(吡啶-4-基)乙烯(dpee)及4,4′-联吡啶(4,4′-bpy)反应得到了2个三维的配位聚合物[Zn(HPHA)(dpee)·(DMA)₂]_n(配合物1)和[Zn(HPHA)₂(4,4′-bpy)₂·DMA]_n(配合物2)。用X射线单晶衍射测定了配合物的晶体结构,结果显示:配合物1属于单斜晶系,C2空间群,每个不对称单元由一个锌离子,一个4-羟基间苯二甲酸配体及一个1,2-二(吡啶-4-基)乙烯组成;配合物2属于单斜晶系,P12/c1空间群,每个不对称单元由两个锌离子,两个4-羟基间苯二甲酸配体及两个4,4′-联吡啶配体组成。荧光光谱分析结果表明:配合物1的最强激发峰和发射峰在分别在251和397 nm,配合物2的最强激发峰和发射峰分别在415和513 nm。热重分析表明两个配合物在室温下稳定。

关键词: 锌配合物, 4-羟基间苯二甲酸, 1,2-二(吡啶-4-基)乙烯, 4,4′-联吡啶, 水热法, 晶体结构, 荧光光谱

Abstract: Under hydrothermal method condition, 4-hydroxyisophthalic acid (H₂HPHA) and Zn(II) ions reacted with 1,2-di(pyridin-4-yl) ethene (dpee) and 4,4-bipyridine (4,4′-bpy) to obtain two coordination polymers [[Zn(HPHA)(dpee)·(DMA)₂]_n (complex 1) and [Zn(HPHA)₂(4,4′-bpy)₂·DMA]_n (complex 2). The crystal structures were determined by single crystal X-ray diffraction method. The results show that complex 1 crystallizes in the monoclinic space group C2 with each asymmetric unit consisting of one Zn(II) ion, one 4-hydroxyisophthalic acid ligand and one 1,2-di(pyridin-4-yl)ethene ligand. Complex 2 crystallizes in the monoclinic space group P12/c1 with each asymmetric unit consisting of two Zn(II) ions, two 4-hydroxyisophthalic acid ligands and two 4,4′-bipyridine ligands. Fluorescence spectrum analysis show that the excitation peak of complex 1 is 251 nm, emission peak is 397 nm. The complex 2 is 415 nm, emission peak is 513 nm. The thermal stability study shows that the complexes are stable at room temperature.

Key words: zinc(II) complex, 4-hydroxyisophthalic acid, 1,2-di(pyridin-4-yl)ethene, 4,4′-bipyridine, hydrothermal method, crystal structure, fluorescence spectrum

中图分类号:

O614.121

李波, 王霏宇, 沈红, 毛逢银, 李勇辉. 基于4-羟基间苯二甲酸和含氮杂环配体的Zn(II)配合物的合成、晶体结构与荧光性质研究[J]. 人工晶体学报, 2024, 53(4): 692-700.

LI Bo, WANG Feiyu, SHEN Hong, MAO Fengyin, LI Yonghui. Synthesis, Crystal Structures and Fluorescent Properties of Zn(II) Complexes Based on 4-Hydroxyisophthalic Acid and Nitrogen-Containing Heterocyclic Ligands[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(4): 692-700.

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