Four-Stage Amphoteric Redox Properties and Biradicaloid Character of Tetra-tert-butyldicyclopental[b:d]thieno[1,2,3-cd;5,6,7-c'd']diphenalene

摘要

Phenalenyl-based hydrocarbons possess highly amphoteric redox properties that give low oxidation and high reduction potentials and afford stable multivalent redox species.These compounds have frontier orbitals with a nonbonding molecular orbital (NBMO) character that results from a weak perturbation between singly occupied molecular orbitals (SOMOs) of the phenalenyl radical and the frontier orbitals of a central conjugated system.