catena-Poly[cobalt(II)-di-μ-chlorido-κ(4) Cl:Cl-μ-1,5-dimethyl-1H-tetra­zole-κ(2) N (3):N (4)]: an X-ray powder investigation

The asymmetric unit of the title compound, [CoCl(2)(C(3)H(6)N(4))](n), contains two Co atoms, both lying on inversion centres, two Cl atoms and one 1,5-dimethyl­tetra­zole ligand. The coordination polyhedra of both Co atoms adopt flattened octa­hedral geometry, with two N atoms from two ligands in axial positions and four Cl atoms in equatorial sites. Neighbouring Co atoms are linked together via two bridging Cl atoms and one tetra­zole ring to form polymeric chains running along the a axis.