Syntheses And Structures Of Coordination Compounds Based On A Flexible Dicarboxylate Ligand

Seven coordination compounds based on flexible1,1’-（1,4-butanediyl）bis（3-carboxyl-2-oxidopyridinium）, namely,[CoNa（L）_1.5（C₂H₅OH）₃]（1）,[Zn（L）_0.5（OH）]·2H₂O （2）,[Co（L）_0.5（OH）]·1.5H₂O （3）,[Co（L）（H₂O）]（4）,[Zn（L）（H₂O）]（5）,[Ni（L）（H₂O）]（6） and [Mn（L）（H₂O）]（7） have been synthesized, and their crystal structureshave been determined by single-crystal X-ray diffraction. Compound1exhibits a0Dmolecular structure. Compound2shows a1D “Z” chain structure. Neighboring chains arefurther linked by hydrogen-bonding interactions into a2D supramolecular layer. Compound3features a1D “Z” chain structure. The chains are further extended into a3D plywood-likestructure by the hydrogen-bonding interactions. Compounds4-7are isomorphous, and display2D （4462） networks. These compounds are further characterized by infrared spectra （IR）,elemental analyses, and powder X-ray diffraction （PXRD）. The luminescent properties of thecompounds were also investigated.