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（英文）

Syntheses,Structures and Properties of Ni(Ⅱ)/Cd(Ⅱ)/Zn(Ⅱ) Complexes with Flexible Homophthalic Acid and Diimidazolyl-Type Ligands

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}n(1)、[Cd(hmph)(bib)]n(2)和{[Zn(hmph)(bip)]·H2O}n(3),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2和3的荧光性质与相应的配体相比都表现出明显的蓝移。

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.CCDC:1935595,1;1935596,2;1935599,3.