KVPY2018ChemistryGeneral Organic Chemistry
The higher stabilities of tert-butyl cation over isopropyl cation and trans- 2 - butene over propene, respectively, are due to orbital interactions involving
Options
- Aσ → π and σ → π *
- Bσ → vacant p and σ → π
- Cσ → σ * and σ → π
- Dσ → vacant p and σ → π *
Correct answer
D. σ → vacant p and σ → π *
Step-by-step solution
Tert-butyl cation is more stable than isopropyl cation, because of better hyper conjugation between σ -vacant and p -orbital. whereas, trans- 2 -butene is more stable than propene because of hyper-conjugation σ - π * -orbitals.