基于柔性苯二乙酸构筑的三个钴配合物的晶体结构和电化学性质（英文）

Crystal Structures and Electrochemistry Properties of Three Co(Ⅱ) Complexes Based on Flexible Phenylenediacetate Ligands

利用水热法合成了3个钴配位聚合物{[Co1.5(opda)1.5(mbib)2(H2O)2]·H2O}n(1),{[Co(mpda)(mbib)]·H2O}n(2)和{[Co(ppda)(mbib)]·H2O}n(3),并对其进行了元素分析、红外光谱、热重分析和X射线单晶衍射测定。结果表明这些配合物的不同结构主要是由于中心钴?髤阳离子的配位几何结构、柔性苯二甲酸和双(咪唑)配体的配位方式和构象的不同。同时,还研究了3个钴配位聚合物的热稳定性和电化学性质。

Three new coordination complexes,{[Co1.5(opda)1.5(mbib)2(H2O)2]·H2O}n(1),{[Co(mpda)(mbib)]·H2O}n(2)and{[Co(ppda)(mbib)]·H2O}n(3)(H2opda=1,2-phenylenediacetic acid,H2mpda=1,3-phenylenediacetic acid,H2ppda=1,4-phenylenediacetic acid,mbib=1,3-bis(1-imidazoly)benzene),have been synthesized by using cobalt salt and bis(imidazole)ligand in the presence of different flexible phenylenediacetate blocks under hydrothermal conditions,and characterized by elemental analysis,IR spectroscopy and single-crystal X-ray crystallography.Single-crystal X-ray diffraction analysis revealed that the diverse structures of these complexes are mainly attributed to various coordination geometries of the central cobalt(Ⅱ)cations,coordination modes and conformations of the flexible phenylenediacetic acid and bis(imidazole)ligands.Furthermore,thermal gravimetric analysis(TGA)and the electrochemistry properties of 1~3 are also investigated,and all of them have good cyclic voltammograms.