Question

Give the condition for hyperconjugation?

Answer 1

Hyperconjugation:

• In order to create an extended molecular orbital that improves the stability of the system, electrons in a -bond (often $\mathrm{C}-\mathrm{H}\mathrm{or}\mathrm{C}-\mathrm{C}$) connect with a neighbouring vacant or partially filled $\mathrm{\delta }-\mathrm{orbital}\mathrm{or}\mathrm{\alpha }-\mathrm{orbital}$.
• This contact is known as hyperconjugation.

Condition for hyperconjugation:

• In organic chemistry, hyperconjugation is the delocalization of electrons caused mostly by character bonds. The stability of the system is enhanced by increased electron delocalization associated with hyperconjugation.
• According to hyperconjugation, also known as no-bond resonance and a version of resonance theory, electron delocalization may also happen through the parallel overlap of p-orbitals with hybridized orbitals implicated in sigma bonds.
• Resonance is defined as pi- pi delocalization, whereas hyperconjugation is defined as sigma pi delocalization. While the pi bond is destroyed in resonance, the sigma bond would need to be severed in hyperconjugation. Additionally, resonance is superior to hyperconjugation.