Chiral triads composed of a central aromatic diimide moiety and two outer a
romatic molecules connected by one- or two-carbon linkers exist in an equil
ibrium of C and S conformers, as inferred from analysis of circular dichroi
sm and nuclear magnetic resonance spectra, as well as from molecular modeli
ng. Chirality 13:322-328, 2001. (C) 2001 Wiley-Liss, Inc.