Question
Mon March 23, 2015 By: Vivek Gupta

What is hypercongugation ...????????????????

Expert Reply
Prachi Sawant
Mon March 23, 2015

Hyperconjugation is the stabilising interaction which results from the interaction of the electrons in a σ-bond (usually C-H or C-C) with an adjacent empty or partially filled p-orbital or a π-orbital to give an extended molecular orbital that increases the stability of the system.

Based on the valence bond model of bonding, hyperconjugation can be described as "double bond - no bond resonance".  But it is not what we would "normally" called resonance.

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