Question

Why is 135 cyclo hepta trienyl anion is non planar molecule?

Answer 1

Answer:

Hence cyclheptatrienyl anio is non aromatic. Whereas in the case of cycloheptatrienyl cation contains 6 π electrons, fulfilling the Huckle rule and the carbocation also in sp2 hybrid state leads continuous delocalization. Hence it is aromatic.

Answer 2

Answer:

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