According to hyperconjugation, also known as no-bond resonance, and a variant of resonance theory, electron delocalization could also occur via parallel overlap of p orbitals with hybridized orbitals …

In organic chemistry, hyperconjugation (σ-conjugation or no-bond resonance) refers to the delocalization of electrons with the participation of bonds of primarily σ-character.

Hyperconjugation is an important electronic effect in organic chemistry that involves the delocalization of electrons in sigma (σ) bonds to stabilize adjacent unsaturated systems like carbocations, alkenes, …

Prediction: Substituents with Low-Lying LUMOs will Accelerate the Sn2 by Stabilizing Electron Density from Nucleophile and Leaving Group through Hyperconjugation

It is also important to note that the effect of hyperconjugation is stronger than the inductive effect. For example, the positive inductive effect of ethyl group is stronger than that of methyl group.

Jan 13, 2026 · Hyperconjugation is rooted in the precise geometric overlap of atomic orbitals within a molecule. The mechanism involves the delocalization of electrons from a sigma (\ (\sigma\)) bond, …

Hyperconjugation is the stabilising interaction that 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 …

The phenomenon of hyperconjugation (or σ-conjugation) may simply be defined as the delocalization of electrons with the participation of bonds of primarily σ-character.

Hyperconjugation, exemplified by the donation of electron density from a filled σ orbital to an empty p orbital, plays a central role in organosilicon chemistry.

In the formalism that separates bonds into σ σ and π π types, hyperconjugation is the interaction of σ σ bonds (e.g. C H, C C, etc.) with a π π network.