Application of NMR spectroscopy of chiral association complexes. 13—electron donor–acceptor complexes between racemic carbazolo [3, 4??c] carbazoles and an …
S Icli, T Burgemeister, A Mannschreck…
文献索引:Icli, Siddik; Burgemeister, Thomas; Mannschreck, Albrecht; Zander, Maximilian Organic Magnetic Resonance, 1982 , vol. 20, # 2 p. 145 - 150
Abstract Strong electron donor–acceptor (EDA) association between carbazolo [3, 4-c] carbazoles and an optically active tetranitrofluorenone derivative was detected by UV– visible spectroscopy and by 1 H NMR shifts. 1 H NMR splittings at low temperatures are due to diastereomeric association complexes and, thus, prove the chirality of carbazolocarbazoles.