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)(H 2 O) 2 ]·2H 2 O ( 1 ), [Zn(ADDA)(bipy) 0.5 ]·NMP·2H 2 O ( 2 ), and [Co(ADDA)(bip)(H 2 O) 2 ]·H 2 O ( 3 ) (bipy = 4,4′-bipyridine, bip = 1,4-di(1 H -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-(CO 2 ) 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 Fe 3+ in methanol suspension at room temperature. Three new mixed-ligand coordination polymers have been synthesized based on 3,3′-(anthracene-9,10-diyl)diacrylate acid and different N-donor ligands. Complex 2 displays rapid and selective sensing of Fe 3+ .