In order to study the efficacy of Peacock method, potential energy surfaces calculations were carried out on Naphthalene (molecule, anionradical and dianion) and p-dicyanobenzene a (anion radical) Peacock method. The results obtained were compared with those from Simonetta method. It was found that as regards the structure of ionpairs, both methods give the same results for conjugated hydrocarbons. Some molecular plane potential surface calculations were carried out for tetraphenylethylene (Neutral, anion radical and dianion).