For 10 points, identify this effect in which electrons in a sigma bond interact with a p-orbital or pi-orbital to create a more stable extended orbital.
Fernandez and Frenking used energy decomposition analysis to evaluate the strength of this effect in substituted ethanes. The beta silicon effect is one variety of it. Conant and Kistiakowsky observed this effect early on in unsaturated compounds such as 1,3-butadiene, while aside from bent bonds, this effect is the most promising explanation for why some gauche conformations are more stable than anti ones. This optimal configuration for this effect is when the participating orbitals are co-planar. This effect is widely seen to stabilize carbocations, and is similar to resonance but does not feature a true bond.. For 10 points, identify this effect in which electrons in a sigma bond interact with a p-orbital or pi-orbital to create a more stable extended orbital.
Fernandez and Frenking used energy decomposition analysis to evaluate the strength of this effect in substituted ethanes.
hyperconjugation