A discussion is given of the process whereby a substituted aromatic molecule captures a slow electron and dissociates. It is shown that the process often goes via two stages. and that the relative symmetries of the electroncapture state and the final dissociation state are very important. Both the sensitivity of the process to changes in the substituent and the existence of an activation energy are explained in the model
Clarke, Donald Dudley PhD and Coulson, C. A., "The dissociative breakdown of negative ions / By D. D. Clarke, Chemistry Department, Fordham University, New York, 10458, U.S.A. C. A. Coulson, Mathematical Institute, University of Oxford" (1969). Chemistry Faculty Publications. Paper 33.