What is the difference between a sigma complex state of a Bezene and the resonance structure?
closed as off-topic by Todd Minehardt, Jan, M.A.R. ಠ_ಠ, ron, airhuff Mar 19 '17 at 20:28
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When a positive charge is conjugated in the ring,it is called sigma complex.
The resonance structure comprises of no such excess charge, only pi electron clouds