4,8,12,16-Tetra-tert-butyl-s-indaceno[1,2,3-cd:5,6,7-c‘d‘]diphenalene: A Four-Stage Amphoteric Redox System

摘要: A four-stage amphoteric redox hydrocarbon (5) containing two phenalenyl units was prepared. X-ray crystallography of 5 reveals a delocalized D2h structure, which is consistent with the presence only five signals in 1H NMR spectrum at −60 °C. The cyclic voltammogram exhibits four reversible waves small numerical sum (E1sum) first oxidation (E1ox) and reduction (E1red) potentials. Four states were successfully generated from neutral characterized by NMR, ESR, UV−vis−near-IR spectroscopies theoretical calculations. These spectral data reveal that play an important role high amphotericity stability generated.