Chapter 3.14, Problem 3.24P

Interpretation Introduction

Interpretation: The table representing the difference in energy for axial-equatorial groups is given. The pictures of axial conformations of isopropylcyclohexane and $tert-\text{butylcyclohexane}$ and an explanation corresponding to increase in large energy of tert-butyl substituent over the isopropyl group is to be stated.

Concept introduction: The cycloalkane with molecular formula ${\text{C}}_{\text{6}}{\text{H}}_{\text{12}}$ is called cyclohexane. This six vertex ring does not show the shape of a complete hexagon. In the case of hexane, the bond angles between carbon atoms are $109.5°$ due to which it has some angle strain that is known as torsional strain. This strain is reduced by cyclohexane, after it adopts a $3-\text{D}$ structure known as chair conformation.

To determine: The pictures of axial conformations of isopropylcyclohexane and $tert-\text{butylcyclohexane}$ and an explanation corresponding to increase in large energy of tert-butyl substituent over the isopropyl group.