Which of the following has the lowest barrier | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The rotational barrier is determined by steric hindrance and the electronic nature of the bond. $A$: Cyclopentane has a cyclic structure,and rotat

Vedclass · Accepted Answer

n-Butane (bond between $C_2$ and $C_3$)

Vedclass · Answer

(C) The rotational barrier is determined by steric hindrance and the electronic nature of the bond. $A$: Cyclopentane has a cyclic structure,and rotation about a $C-C$ bond is restricted by the ring strain. $B$: Buta$-1,3-$diene has partial double-bond character between $C_2$ and $C_3$ due to conjugation,leading to a high rotational barrier. $C$: $n$-Butane $(CH_3-CH_2-CH_2-CH_3)$ has a simple $sp^3-sp^3$ single bond with minimal steric hindrance compared to the other options,resulting in the lowest rotational energy barrier. $D$: $2,3-$Dimethylbutane has significant steric repulsion between the bulky methyl groups during rotation,leading to a higher barrier than $n$-butane.

Which of the following has the lowest barrier to rotation about the indicated bond?

Similar Questions

Which of the following cannot be prepared using the Wurtz reaction?

The alkane that gives only one mono-chloro product on chlorination with $Cl_2$ in the presence of diffused sunlight is:

$CH_4$ is formed when:

Identify the reagent $(A)$ used in the following reaction.

Briefly explain the trends in boiling point and melting point in the alkane series.

Vedclass Test Series

Exam Paper Generator

Online Exam Module