The field-induced resonance effect

Abstract

Molecular orbital calculations at the ab initio 4-31 G level have been used to investigate the magnitude of the experimentally proposed field-induced resonance effect. Calculations are reported of the increase in π-electron transfer induced by a dipole or pole between a substituent and a carbon–carbon double bond. This additional π-electron transfer is shown to be relatively small compared with the transfer found in the corresponding unperturbed substituted ethylene.