Crystal structures, topological analysis and luminescence properties of three coordination polymers based on a semi-rigid ligand and N-donor ligand linkers

Three new mixed-ligand coordination networks, [Cd-2(ADDA)(bipy)(H2O)(2)]center dot 2H(2)O (1), [Zn(ADDA)(bipy)(0.5)]center dot NMP center dot 2H(2)O (2), and [Co(ADDA)(bip)(H2O)(2)]center dot H2O (3) (bipy = 4,4'-bipyridine, bip = 1,4-di(1H-imidazol-1-yl)-benzene, H(2)ADDA = 3,3'-(anthracene-9,10-diyl) diacrylic acid), have been synthesized based on 3,3'-(anthracene-9,10-diyl) diacrylate acid and different N-donor ligands under solvothermal conditions, and structurally characterized by single-crystal X-ray diffraction analyses, infrared spectroscopy (IR), elemental analyses, powder X-ray diffraction (PXRD) and thermogravimetric analyses (TGA). Topological analysis reveals that 1 features a rare 8-connected 3D ilc network with the point symbol of {4<^>24.5.6<^>3}; complex 2 possesses a 3D open framework based on the infinite Zn-(CO2) chain with the point symbol of {6<^>2.8<^>4}; while complex 3 shows a normal 2D 3-connected coordination network with hcb topology and the point symbol of {6<^>3}. Besides, the luminescence properties of complexes 1 and 2 were also investigated. The results show that complex 2 bears rapid and selective sensing of Fe3+ in methanol suspension at room temperature.