Grade 12th passOrganic Chemistry
why Allyl carbocation is more stable than vinyl carbocation
why Allyl carbocation is more stable than vinyl carbocation
1 Answer
Avinash
In general, any adjacent lone pair or π bond can also be involved
in resonance delocalization of a carbocation positive charge. Allylic and benzylic
carbocations enjoy resonance stabilization by delocalization of the positive charge to the
adjacent π bond(s). Vinylic and aryl carbocations do not enjoy resonance stabilization
because their π electron clouds are perpendicular to the vacant p orbital of the
carbocation. (Recall that resonance requires the interacting orbitals to be parallel so they
can overlap. Without overlap there can be no resonance.)
Approve if you agree.
in resonance delocalization of a carbocation positive charge. Allylic and benzylic
carbocations enjoy resonance stabilization by delocalization of the positive charge to the
adjacent π bond(s). Vinylic and aryl carbocations do not enjoy resonance stabilization
because their π electron clouds are perpendicular to the vacant p orbital of the
carbocation. (Recall that resonance requires the interacting orbitals to be parallel so they
can overlap. Without overlap there can be no resonance.)
Approve if you agree.
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