ChemInform Abstract: Bridged (14)Annulenes with Phenanthrene‐Perimeter: syn‐1,6:7,12‐Bismethano(14)annulene.

Abstract

The idea of transforming a classical arene, by “bridging,” into a [4n+2]annulene has been further extended to the phenanthrenes. The spectroscopic data and structural parameters for the title compound 1 reveal it to be a borderline case, with respect to its π‐electron structure, for an aromatic molecule.