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in carbocation there is rearrangement possible but in carbanions it is not ;why

in carbocation there is rearrangement possible but in carbanions it is not ;why

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1 Answers

SAGAR SINGH - IIT DELHI
878 Points
12 years ago

Dear student,

Carbocation rearrangements are more common than the carbanion or radical counterparts. This observation can be explained on the basis of Huckel's law. A cyclic carbocationic transition state is aromatic and stabilized because it holds 2 electrons. In an anionic transition state on the other hand 4 electrons are present thus antiaromatic and destabilized. A radical transition state is neither stabilized or destabilized.

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