基于3-氧醚乙酸-邻苯二酸和N-辅助配体的锌和镉配合物的合成、晶体结构及荧光性质(英文)

Zinc and Cadmium Coordination Polymers Based on 3-(Carboxymethoxy)benzene-1,2-dioic Acid and N-donor Ancillary Ligands: Syntheses, Crystal Structures,and Luminescent Properties

水热法合成得到2个配合物,{[Zn7(L)4(bpe)2(μ3-OH)2(H2O)8]·4H2O}n(1),和{[Cd3(L)2(bpy)2.5(H2O)]·5.5H2O}n(2)(H3L=3-(carboxymethoxy)benzene-1,2-dioic acid,bpe=1,2-bis(4-pyridyl)-ethene,bpy=4,4′-bipyridine),并采用元素分析、红外光谱、热重和X-射线单晶衍射对其结构进行表征。配合物1中,配体L3-和bpe连接[Zn5(μ3-OH)2]中心形成一维链,这样的链通过氢键连接成三维的超分子结构。配合物2呈现(3,3,6)连接的网状结构。此外,对配合物1和2的荧光性质进行了研究。

Two coordination polymers, {[Zn7（L）4（bpe）2（ μ3-OH）2（H2O）8]·4H2O}n（1）, and {[Cd3（L）2（bpy）2.5（H2O）]·5.5H2O}n（2）（H3L=3-（carboxymethoxy）benzene-1,2-dioic acid, bpe=1,2-bis（4-pyridyl）-ethene, and bpy=4,4′-bipyridine）, have been synthesized under hydrothermal condition. Both complexes were characterized by elemental analysis, IR spectra, thermogravimetric analysis（TGA）, and single-crystal X-ray crystallography. Complex 1 features a threedimensional supramolecular architecture linked through hydrogen bonding interactions in which the secondary building unit（SBU） is [Zn5（ μ3-OH）2] cluster. Complex 2 features three-dimensional metal-organic framework with（3,3,6）-connected topology. The luminescence behaviors of 1 and 2 were also discussed. CCDC： 965303, 1;965304, 2.