Novel bonding structure of some nonalternant polycyclic systems

Abstract

Spectroscopic evidence suggests that a highly amphoteric hydrocarbon, 8, 16-diisopropyl-s-indaceno[1,2,3-o/:5,6,7-c‘d’]diphenalene exhibits the unique switching between diatropism and paratropism accompanied by its oxidation levels. London-McWeeny ring current calculations suggest a rationale for the abnormal H-NMR phenomena of the series of redox states of this molecule. The bonding structure of 2-triphenylmethyldicyclohept[c