| Summary: | In the title compound, [Co(C8H5NO4)(C12H12N2)]n, the CoII ion presents a distorted CoO4N2 octahedral coordination geometry, formed by three 5-aminoisophthalate dianions and two 1,2-bis(4-pyridyl)ethane ligands. One carboxylate group of the 5-aminoisophthalate dianion chelates a Co cation and the other carboxylate group bridges the other two Co cations, while the terminal N atoms of the 1,2-bis(4-pyridyl)ethane ligand coordinate the neighboring Co cations, forming a two-dimensional polymeric architecture. Two pyridine rings of the 1,2-bis(4-pyridyl)ethane ligand are twisted to each other with a dihedral angle of 50.94 (16)°. Weak C—H...O hydrogen bonding and N—H...π interactions are observed in the crystal structure. A void of 69 (5) Å3 is present in the crystal structure, but no solvent molecule can be located reasonably.
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