catena-Poly[[(1,10-phenanthroline)cobalt(II)]-di-μ-azido]

In the crystal structure of the binuclear title complex, [Co(N₃)₂(C₁₂H₈N₂)]_n, each Co^II cation is coordinated by two N atoms from one chelating 1,10-phenanthroline ligand and four azide ligands in a slightly distorted octa­hedral coordination. The two Co^II cations of the binuclear complex are related by an inversion centre and are bridged by two symmetry-related azide ligands in both μ_1,1 and μ_1,3 modes. The μ_1,3 bridging mode gives rise to an infinite one-dimensional chain along the a axis, whereas the μ_1,1 bridging mode is responsible for the formation of the binuclear Co^II complex.