Discuss the 2 most-commonly encountered representations of benzene, providing an advantage and disadvantage for each
Kekule structure advantages: Useful for mechanistic understanding, can push arrows to advise likely regiochemistry. Disadvantages: ignores aromatic stablisation, drawn structure much higher energy than actualDelocalised structure advantages: More 'accurate' description of the system, electrons fully delocalised, all bonds same order. Disadvantages: Less useful for understanding effects of substituents on the ring.
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