The hyperconjugation between out-of-plane ? bonds is greater because the in-plane ? bonds are poorly aligned.
22.
Hyperconjugation can also explain several other phenomena whose explanations may also not be as intuitive as that for the rotational barrier of ethane.
23.
An analysis within quantitative molecular orbital theory shows that 2-orbital-4-electron ( steric ) repulsions are dominant over hyperconjugation.
24.
The existence of specific conformations is due to hindered rotation around sigma bonds, although a role for hyperconjugation is proposed by a competing theory.
25.
Both the hyperconjugation and the dipole minimization contribute to the preferred ( Z )-conformation of esters over the ( E )-conformation.
26.
This orientation allows for hyperconjugation of O-5 to O-4 and O-6, removing electron density from O-5.
27.
Hyperconjugation model for explaining the gauche effect in 1, 2-difluoroethaneThere are two main explanations for the gauche effect : hyperconjugation and bent bonds.
28.
Hyperconjugation model for explaining the gauche effect in 1, 2-difluoroethaneThere are two main explanations for the gauche effect : hyperconjugation and bent bonds.
29.
A well-studied example of delocalization that does not involve ? electrons ( hyperconjugation ) can be observed in the non-classical 2-Norbornyl cation.
30.
On the other hand, an analysis within quantitative molecular orbital theory shows that 2-orbital-4-electron ( steric ) repulsions are dominant over hyperconjugation.
