The table representing the difference in energy for axial-equatorial groups is given. The pictures of axial conformations of isopropylcyclohexane and t e r t − 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 C 6 H 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 − D structure known as chair conformation. To determine: The pictures of axial conformations of isopropylcyclohexane and t e r t − butylcyclohexane and an explanation corresponding to increase in large energy of tert-butyl substituent over the isopropyl group.

Question

How many signals do you expect in the H NMR spectrum for this molecule? Br Br Write the answer below. Also, in each of the drawing areas below is a copy of the molecule, with Hs shown. In each copy, one of the H atoms is colored red. Highlight in red all other H atoms that would contribute to the same signal as the H already highlighted red Note for advanced students: In this question, any multiplet is counted as one signal. 1 Number of signals in the 'H NMR spectrum. For the molecule in the top drawing area, highlight in red any other H atoms that will contribute to the same signal as the H atom already highlighted red. If no other H atoms will contribute, check the box at right. Check For the molecule in the bottom drawing area, highlight in red any other H atoms that will contribute to the same signal as the H atom already highlighted red. If no other H atoms will contribute, check the box at right. O ✓ No additional Hs to color in top molecule ง No additional Hs to color in bottom…

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Question

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−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 C6H12 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−D structure known as chair conformation.

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

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