9,10,11,12,13,14,15,16-Octaphenyldibenzo[a,c]naphthacene

This is an end-on view of the core of 9,10,11,12,13,14,15,16-octaphenyldibenzo[a,c]naphthacene, the most highly twisted polycyclic aromatic hydrocarbon ever prepared. The X-ray structure shows an end-to-end twist of 105 degrees! For a brief communication describing the synthesis and structure of this molecule, see "An Extraordinarily Twisted Polycyclic Aromatic Hydrocarbon," X. Qiao, D. M. Ho, and R. A. Pascal, Jr., Angewandte Chemie Int. Ed. Eng. 1997, 36, 1531-1532.