ELECTRONIC STRUCTURE OF SOME SUBSTITUTED AZOLIDINES. CNDO/2, NMR AND VIBRATIONAL SPECTROSCOPIC STUDIES

Abstract
The 1H and 13C chemical shifts, characteristic vibrational frequencies and force constants for some substituted azolidines are correlated with the results of the CNDO/2 calculations. The influence of the exo and endo heteroatoms on the electronic structure of the heterocyclic ring are discussed.