From Subphthalocyanines to Subporphyrins

Abstract

Contracting porphyrins: An important step on the way to the as-yet unrealized contracted porphyrin, the so-called subporphyrin, is a tribenzosubporphyrin (see structure). The new system, which is closely related to boronsubphthalocyanines, comprises a 14-π-electron aromatic core and adopts a nonplanar bowl-shaped conformation.