1,4-Bis(chloromethyl)naphthalene

In the title molecule, C12H10Cl2, the torsion angles Cr—Cr—Cm—Cl around the Cm—Cr bonds have values of −104.1 (4) and −101.9 (4)°, where Cm is a methylene and Cr is a ring C atom. The molecules related by translation along the b axis are arranged into stacks by π–π interactions between unsubstituted and substituted aromatic rings of the naphthalene ring system (centroid–centroid distance = 3.940 Å).