Part b : Compare the resonance energy of the following compounds. Is the resonance energy of (a) greater than, less than or equal to (b) ?
(a)
(b)

Question

Part b : Compare the resonance energy of the following compounds. Is the resonance energy of (a) greater than, less than or equal to (b) ? (a) (b)

TestHub · Accepted Answer

(a) is the cyclopentadienyl anion : 6π, aromatic, with extra aromatic stabilisation. (b) is the open-chain allyl anion with simple resonance only. So a > b.

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