Diaqua­bis[5-(2-pyrid­yl)-1H-tetra­zolato-κ(2) N (1),N (5)]cobalt(II)

In the title compound, [Co(C(6)H(4)N(5))(2)(H(2)O)(2)], the Co atom is bonded to two water mol­ecules and two bidentate 5-(2-pyrid­yl)tetra­zolate ligands resulting in a slightly distorted octa­hedral CoN(4)O(2) coordination geometry. The Co(II) cation is situated on a crystallographic center of inversion. The asymmetric unit therefore comprises one-half of the mol­ecule. The four N atoms belonging to two bidentate 5-(2-pyrid­yl)tetra­zolate ligands lie in the equatorial plane and the two associated water mol­ecules are observed in the axial coordination sites. The crystal structure exhibits a three-dimensional supra­molecular network assembled by inter­molecular O—H⋯N hydrogen bonds.