6,6′-Bis­(chloro­methyl)-2,2′-bi­pyridine

In the crystalline state, the two pyridyl groups of the centrosymmetric title mol­ecule, C₁₂H₁₀Cl₂N₂, are coplanar, with the N atoms trans to each other and with the Cl atoms of the chloro­methyl groups protruding on opposite sides of the bipyridyl plane. In the crystal structure, the mol­ecules are arranged in discrete layers propagated by edge-to-face and offset face-to-face aryl–aryl interactions. The interlayer spaces are occupied by chloro­methyl groups.