SYNTHESIS, STRUCTURAL CHARACTERIZATION, AND SUPRAMOLECULAR ASSEMBLY OF A ONE-DIMENSIONAL COBALT(II) COORDINATION POLYMER WITH SUCCINATO AND ISONICOTINAMIDE LIGANDS

A novel one-dimensional coordination polymer, catena-poly[μ-succinatobis(isonicotinamide-κN)diaquacobalt(II)], [Co(suc)(ina)₂(H₂O)₂]n (suc = succinate, ina = isonicotinamide), was synthesized via the reaction of cobalt(II) chloride hexahydrate, sodium hydroxide, succinic acid, and isonicotinamide in aqueous methanol. Structural characterization using single-crystal X-ray diffraction, FT-IR spectroscopy, and thermal analysis revealed that Co(II) exhibits an octahedral coordination geometry, with succinate bridging the cobalt centers to form a one-dimensional polymeric chain. Extensive hydrogen bonding stabilizes the three-dimensional supramolecular architecture.