Tetra­aqua­bis­[5-(3-pyrid­yl)tetra­zolido-κN (5)]zinc(II) tetra­hydrate

The title compound, [Zn(C(6)H(4)N(5))(2)(H(2)O)(4)]·4H(2)O, was synthesized by the hydro­thermal reaction of Zn(CH(3)COO)(2)·2H(2)O with 3-(2H-tetra­zol-5-yl)pyridine. The Zn(II) ion is located on an inversion center and is coordinated by two pyridine N atoms from two 5-(3-pyrid­yl)tetra­zolide ligands and four coordinated water mol­ecules in a slightly distorted octa­hedral geometry. The dihedral angle between the pyridine and tetra­zole rings is 9.920 (7)°. In the crystal, mol­ecules are linked into a three-dimensional network by inter­molecular O—H⋯O and O—H⋯N hydrogen bonds involving the tetra­zole group N atoms, the aqua ligands and solvent water mol­ecules.