摘要
Three new complexes have been prepared based on the transition metals and zwitterionic dicarboxylate ligand 1,1＇-（1,4-phenylene-bis（methylene））-bis（pyridine-3-carboxylic acid） （L）, whose formulas are {[Cd4（L）（SO4）]· （C1）6}n （1）, [Zn（L）C12], （2）, and [Co（L）C12], （3）, respectively. Complexes 1-3 have been characterized by elemental analyses, IR spectroscopy, XRD, thermal analyses and single crystal X-ray （powder） diffraction. 1 crystallizes in monoclinic space group C2/m, displaying a 2-D layer structure with three unique Cd^2＋ centers. 2 and 3 are iso- morphic structures with the orthorhombic Cmca space group. They exhibit a 1-D zigzag chain, which can be linked to generate a 2-D layer via hydrogen bonding interactions （C--H＇＂O）. Moreover, electrochemical behavior reveals that the redox reaction of 3-CPE is a surface-controlled reaction. And the luminescent properties of the title comlexes have been investigated at room temperature.
Three new complexes have been prepared based on the transition metals and zwitterionic dicarboxylate ligand 1,1＇-（1,4-phenylene-bis（methylene））-bis（pyridine-3-carboxylic acid） （L）, whose formulas are {[Cd4（L）（SO4）]· （C1）6}n （1）, [Zn（L）C12], （2）, and [Co（L）C12], （3）, respectively. Complexes 1-3 have been characterized by elemental analyses, IR spectroscopy, XRD, thermal analyses and single crystal X-ray （powder） diffraction. 1 crystallizes in monoclinic space group C2/m, displaying a 2-D layer structure with three unique Cd^2＋ centers. 2 and 3 are iso- morphic structures with the orthorhombic Cmca space group. They exhibit a 1-D zigzag chain, which can be linked to generate a 2-D layer via hydrogen bonding interactions （C--H＇＂O）. Moreover, electrochemical behavior reveals that the redox reaction of 3-CPE is a surface-controlled reaction. And the luminescent properties of the title comlexes have been investigated at room temperature.
基金
This work was financially supported by the Program for National Natural Science Foundation of China （Nos. 21271024 and 20971014）.
