Hyperconjugation (σ–π or σ–p overlap) (σ(C–H) overlaps empty p or π*; more α-hydrogens → more hyperconjugation)
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σ(C–H) overlaps empty p or π*; more α-hydrogens → more hyperconjugation
What each symbol means
| Symbol | What it stands for |
|---|---|
| α-H | Hydrogens on carbon attached to carbocation/π system |
When to use this
Requires correct geometry for overlap; strongest for carbocations and alkenes adjacent to alkyl groups.