Hydrothermal syntheses, crystal structures, and properties of two new coordination polymers constructed from a flexible pyridinecarboxylate ligand

Two new coordination polymers with the same topological structure [Zn(L)](2n)n(H2O) (1) and [Co(L)](2n)n(H2O) (2) (H2L=5-(pyridin-2-ylmethoxy)-isophthalic acid) have been hydrothermally synthesized by reactions of metal salts and H2L. Single-crystal X-ray analyses reveal that 1 and 2 are isostructural and crystallize in orthorhombic chiral P2(1)2(1)2 space group. These compounds feature 2-D undulated layer structures with (3,6)-connected kgd topology, which further extended into a 3-D supramolecular framework via intermolecular hydrogen bonds. In addition, the luminescent properties of 1 and 2 and the magnetic property of 2 were also investigated.