Within the framework of the Hückel molecular orbital theory, certain linear models are developed to express the contribution of peripheral circuits of cyclacenes into their total \pi-electron energies, which explain why cyclacenes exhibit the cryptoannulenic behavior as their peripheral circuits which are annulenic in character.
TÜRKER, LEMİ (2000) "The Effect of Peripheral Circuits on the Total \pi-Electron Energies of Cyclacenes," Turkish Journal of Chemistry: Vol. 24: No. 3, Article 1. Available at: https://journals.tubitak.gov.tr/chem/vol24/iss3/1