Phenacenes are a family of ‘‘graphite ribbons,’’ where benzene rings are fused together in an alternating pattern. Phenanthrene is the simplest member of this family and other members include the 22-electron system picene (119); the 26- electron system fulminene (120); and the larger member of this family, the 30 elec- tron [7]-phenancene, with seven rings (121).310 In the series benzene to heptacene, reactivity increases although acene resonance energies per p electron are nearly constant. The inner rings of the ‘‘acenes’’ are more reactive, and calculations shown that those rings are more aromatic than the outer rings, and even more aromatic than benzene itself.311