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

Three new coordination polymers (CPs) with the formulas of [Zn2(SDBA)2(im)4]n (1), [CdCa(SDBA)2(DMA)(H2O)]n ⋅ 2n(DMA) (2) and [Cu(SDBA)0.5(μ2‐OH)]n (3) (H2SDBA=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)(μ2‐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.