基于柔性的高酞酸和双咪唑型配体的Ni(Ⅱ)/Cd(Ⅱ)/Zn(Ⅱ)配位聚合物的合成、结构和性质
Syntheses, Structures and Properties of Ni(Ⅱ)/Cd(Ⅱ)/Zn(Ⅱ) Complexes with Flexible Homophthalic Acid and Diimidazolyl-Type Ligands
作者单位E-mail
鞠丰阳 洛阳师范学院食品与药品学院, 洛阳 471934  
李云平 洛阳师范学院化学化工学院, 河南省功能导向多孔材料重点实验室, 洛阳 471934  
刘广臻 洛阳师范学院化学化工学院, 河南省功能导向多孔材料重点实验室, 洛阳 471934 gzliuly@126.com 
摘要: 基于柔性的高酞酸(H2hmph)和双咪唑型配体,通过溶剂热法合成了3种新的配位聚合物:{[Ni2(hmph)2(bib)2(H2O)2]·3H2O}n1)、[Cd(hmph)(bib)]n2)和{[Zn(hmph)(bip)]·H2O}n3),其中bib=1,4-双(1-咪唑基)苯、bip=3,5-双(1-咪唑基)吡啶。配合物1是由Ni-羧酸链之间通过bib配体桥联而成的二维单层结构;配合物2为Cd-羧酸双股链之间通过bib配体拓展而成的二维双层结构,并含有由羧基连接的双核单元;配合物3是由羧酸连接而成的双核Zn单元通过bip配体拓展形成的双股链。3个配合物都具有较高的热稳定性。磁性分析表明在配合物1中存在铁磁性交换偶合作用。另外,配合物23的荧光性质与相应的配体相比都表现出明显的蓝移。
关键词: 高酞酸  双咪唑型  配位聚合物  磁性质  荧光性质
基金项目: 国家自然科学基金(No.21571093)资助项目。
Abstract: Based on flexible homophthalic acid (H2hmph) and diimidazolyl-type ligands, three novel coordination polymers with the formulas determined as {[Ni2(hmph)2(bib)2(H2O)2]·3H2O}n (1),[Cd(hmph)(bib)]n (2) and {[Zn(hmph)(bip)]·H2O}n (3) (bib=1,4-bis(1-imidazolyl)benzene; bip=3,5-bis(1-imidazolyl)pyridine) have been solvothermally synthesized. Complex 1 displays a 2D mono-layer structure featuring Ni-carboxylate chains cross-linked further by bib co-ligands. Complex 2 exhibits a 2D bilayer structure containing double-stranded Cd-carboxylate chains bridged by bib co-ligands, wherein there are carboxyl-bridged dinuclear kernels. Complex 3 is double-stranded chain featuring Zn-carboxylate binuclear units extended further by bip co-ligands. TGA experiments show that all three complexes have high thermal stabilities. And the magetic data indicate there is typical ferromagnetic exchange coupling in complex 1. Furthermore, the fluorescent properties of both complexes 2 and 3 show significant blue-shift compared with the free ligands.
Keywords: homophthalic acid  diimidazolyl  coordination polymers  magnetic property  fluorescent property
投稿时间:2019-07-02 修订日期:2019-11-04
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鞠丰阳,李云平,刘广臻.基于柔性的高酞酸和双咪唑型配体的Ni(Ⅱ)/Cd(Ⅱ)/Zn(Ⅱ)配位聚合物的合成、结构和性质[J].无机化学学报,2020,35(2):368-376.
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