Pi-electron method

The correlation of the rates of formation of arylmethyl free-radicals by molecular oibital theory will be discussed. Different levels of sophistication among pi-electron methods lead to conflicting conclusions concerning the degree of possible electron localization and the importance of non-bonded interactions with the principal radical site. The arylmethyl radical systems have been generated both by hydrogen abstraction... 

The Hiickel pi-electron method has been applied to numerous compounds and Lowe [9] has documented two general solutions for pi-hydrocarbons using a graphical argument. 

---