Semi-empirical calculations concerning the geometry of the cycloheptatrienyl anion

Autor: J. J. C. Mulder, A. W. Zwaard, Albert M. Brouwer
Přispěvatelé: HIMS (FNWI)
Rok vydání: 1982
Předmět:
Zdroj: Recueil des travaux chimiques des Pays-Bas = Journal of the Royal Netherlands Chemical Society, 101, 137-141. Royal Netherlands Chemical Society
ISSN: 0165-0513
DOI: 10.1002/recl.19821010402
Popis: Semi-empirical calculations (mostly MINDO/3) have been performed on singlet C7H7−. A preference for planar structures is evident from the calculations. Two different structures (an allylic structure and a pentadienylic structure, respectively) are found as absolute minima on the potential surface. They were found to be second-order Jahn-Teller deformations of the highly symmetrical (D7h) structure, the energy lowering on these distortions being about 9 kcal/mole. A first-order Jahn-Teller effect was found to be negligible. The related C5H5+ system is considered briefly for comparison.
Databáze: OpenAIRE