The template-directed synthesis of cyclobis (paraquat-4,4′-biphenylene)
The template-directed synthesis of cyclobis (paraquat-4,4′-biphenylene), (P. R. Ashton, S. Menzer, F. M. Raymo, G. K. H. Shimizu, J. F. Stoddart, and D. J. Williams), Chem. Commun. 1996, 4, 487-490.