Syntheses, Crystal Structures and Physical Properties of Four Zinc/Cadmium Coordination Polymers Based on 4-Nitrophthalic Acid and N-donor Auxiliary Ligands

Four new d10 metal coordination polymers, [Zn(4-NPA)(2,2-bipy)]n (1), [Zn(4-NPA)(1,3-bimb)·H2O]n (2), [Cd(4-NPA)(2,2-bipy)]n (3) and [Cd(4-NPA)(1,3-bimb)·H2O]n (4) (4-NPAH2 = 4-nitrophthalic acid, 2,2-bipy = 2,2-bipyridine, 1,3-bimb = 1,3-bis(imidazol-1-ylmethyl)-benzene), have been hydrothermally synthesized and characterized by elemental analyses, IR spectra, and X-ray single crystal diffractions. Compounds 1−3 possess different one-dimensional (1D) chain structures. Compound 4 shows a two-dimensional (2D) layered structure. Moreover, the luminescent and thermal stabilities properties of compounds 1–4 were investigated in the solid state.