(5Z,7Z,9Z)-5,10-Di-bromo-benzo[8]annulene.

In the structure of the title compound, C12H8Br2, the two bromine substituents are oriented exo to the boat-shaped cyclo-octa-tetra-ene at the two ring sites that are β to the ring fusion positions. The average Br-C bond distance is 1.919†(2)†à , the average distance for C=C double bonds that are Br substituted is 1.328†(2)†à , while the other two double-bond distances are 1.327†(2) and 1.398†(2)†à for the non-fused and fused bonds, respectively. Each type of ring inter-atomic distance is within s.u. of the average values for the four known structures, including the title compound, of benzo-fused cyclo-ocata-tetra-enes that are not coordinated to a metal atom. The crystal structure features short Br⋯Br [3.6620†(3)†à ] and C⋯H [2.834†(2) and 2.841†(2)†à ] contacts.