Three new V‐shape dicarboxylate coordination polymers: syntheses, crystal structures and properties

Three new coordination polymers (CPs) with the formulas of [Zn 2 (SDBA) 2 (im) 4 ] n ( 1 ), [CdCa(SDBA) 2 (DMA)(H 2 O)] n  ⋅ 2n(DMA) ( 2 ) and [Cu(SDBA) 0.5 ( μ 2 ‐OH)] n ( 3 ) (H 2 SDBA=4,4’‐dicarboxybiphenyl sulfone, im=imidazole, DMA=N,N’‐dimethylacetamide) have been synthesized under hydro(solvo)thermal conditions and characterized by elemental analyses, powder x‐ray diffraction analyses, thermogravimetric analyses and single crystal X‐ray structural analyses. CP 1 displays a 1D double chain structure consolidated by N−H⋅⋅⋅O hydrogen bonds, which are further extended into a 3D supramolecular framework via the help of intermolecular N−H⋅⋅⋅O hydrogen bonds. CP 2 features a 2D layered structure based on 1D −[Cd−(COO) 2 −Ca] n − chains. Interestingly, in this 2D layer there exists large 1D channels that are occupied by the coordinated DMA molecules, coordinated water molecules and free DMA molecules. CP 3 has a 3D framework based on 1D −[Cu−(COO)( μ 2 ‐OH)−Cu] n − chains. The luminescent properties of CPs 1 and 2 , gas adsorption properties of 2 a (solvent‐free form of CP 2 ), and photocatalytic property of CP 3 were also investigated.