hyperconjugation

Question

Hyperconjugation involves orbital overlap between:

RankGuru · Accepted Answer

**Hyperconjugation** (or no-bond resonance) is the delocalization of $\sigma$ electrons of **$\alpha-C-H$ bonds**.
- **Mechanism**: It involves the overlap of the filled $\sigma$ bonding orbital of a $C-H$ bond with an adjacent empty $p$ orbital (in carbocations) or a partially filled $p$ orbital (in free radicals) or an antibonding $\pi^*$ orbital (in alkenes).
- This effect stabilizes the system and explains why $3^\circ$ carbocations (having more $\alpha-H$ for hyperconjugation) are more stable than $1^\circ$.

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hyperconjugation

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More hyperconjugation Practice Questions

Hyperconjugation is best described as: