4,4-Dichloro­tricyclo­[5.4.0.0(3,5)]undeca-7,9,11-triene

The title compound, C(11)H(10)Cl(2), is a useful inter­mediate for the synthesis of 1H-cyclo­propa[b]naphthalene. Strain in the mol­ecule is evidenced by the fact that the cyclo­hexane ring is essentially planar and nearly coplanar with the benzene ring [dihedral angle 1.87 (18)°], and the cyclo­propyl ring is almost perpendicular to the cyclo­hexane ring [dihedral angle 70.99 (12)°]. The mol­ecules are loosely connected into one-dimensional chains by inter­molecular Cl⋯Cl inter­actions with a distance of 3.571 (1) Å. The centroid-to-centroid distance between stacked benzene rings is ca 5.89 Å, indicating that no π–π stacking exists in the crystal structure.