Poly[[aqua(2,2-bipyridine)(μ3-pyridine-3,4-dicarboxylato)cobalt(II)] monohydrate

Abstract

The asymmetric unit of the title compound, {[Co(C7H3NO4)(C10H8N2)(H2O)]·H2O}n, contains one CoII cation chelated by one 2,2′-bipyridine ligand and further coordinated by two monodentate carboxyl­ate groups and one N atom belonging to three symmetry-related pyridine-3,4-dicarboxyl­ate ligands (acting in a μ3-N:O:O′ mode), and one water mol­ecule. The result is a CoO3N3 polyhedron which exhibits an octa­hedral geometry. Each two neighboring CoII cations are bridged by two independent pyridine-3,4-dicarboxyl­ate ligands, which are further coordinated to a third and fourth CoII cation though the pyridine N atom to form corrugated layers parallel to the (110) plane. There are two medium–strong intra­molecular hy­dro­gen bonds involving the coordinated water mol­ecule and two inter­molecular hydrogen bonds involving the solvent water mol­ecule, linking layers into a three-dimensional packing network.