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Explain Primary, Secondary, and Tertiary Allylic Carbocations? Primary CarbocationIf in one of the two resonance forms of the allylic carbocation, the regular price of +1 is on one carbon level, the allylic carbocation is referred to as the level one (1°) allylic carbocation.Secondary CarbocationIf there is a formal charge of +1 on the secondary carbon inside the more strong of two allyl carbocation resonance groups, the allyl carbocation is referred to as secondary (2°) allyl carbocation; if there is a formal charge of +1 on the secondary carbon in each resonance carbocation, it is also referred to as secondary allyl carbocation.Tertiary CarbocationIf the formal price of +1 is on tertiary carbon in either one or both of the resonance styles of the allylic carbocation, the allylic carbocation is referred to as tertiary (3°) allylic carbocation. Explain the Factors Affecting the Stability of Carbocation? Generally, carbocations are unstable due to not having eight electrons to satisfy the octet rule.The three foremost factors to increase the stability of carbocations are, Increasing the adjacent carbon atom countMethyl (the least stable carbocation) < primary < secondary < tertiary (the most stable carbocation)The tertiary carbocation is the most stable one, as it is surrounded by other three carbon atoms that share its positive charge burden. Primary and methyl carbocations especially are seen rarely in organic reactions except under special circumstances such as in the case of benzylic or allylic cations.
