Diaquabis(2-oxidopyridinium-3-carboxylato-κ2O2,O3)cobalt(II)

Abstract

In the title mononuclear complex, [Co(C6H4NO3)2(H2O)2], the six-coordinate CoII atom assumes an octa­hedral geometry and is located on an inversion centre. There is a weak π–π stacking inter­action between adjacent pyridyl rings [centroid-to-centroid distance = 3.8067 (17) A and perpendicular distance = 3.533 A]. O—H⋯O, N—H⋯O and C—H⋯O hydrogen bonds connect the mononuclear complexes and form a supra­molecular three-dimensional structure.