The most stable conformer of the given molecule has to be drawn. Concept introduction: Conformers: The different spatial arrangements of the atoms the result from rotation about a single bond is called conformational isomers. Stereoisomerism (or) geometric isomerism: It is known as cis-trans isomerism or E-Z isomerism is a form of stereoisomerism the each of two or more chemical compounds having the same molecular formula but a different geometric arrangement; an unsaturated compound or ring compound in which rotation around a carbon bond is restricted, as in ( cis ) and ( trans ) configurations know as geometric isomerism. Relative stability of cyclohexane: The most stable conformation of cyclohexane is the chair shown to the right, the respective carbon (-C-C-) bonds are it close to (109.5 0 ), it is almost free of angle strain, it is also a fully staggered conformation and so is free of torsional strain. So the chair conformation is the most stable conformation.

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Chapter 3, Problem 65P

Interpretation Introduction

Interpretation:

The most stable conformer of the given molecule has to be drawn.

Concept introduction:

Conformers: The different spatial arrangements of the atoms the result from rotation about a single bond is called conformational isomers.

Stereoisomerism (or) geometric isomerism: It is known as cis-trans isomerism or E-Z isomerism is a form of stereoisomerism the each of two or more chemical compounds having the same molecular formula but a different geometric arrangement; an unsaturated compound or ring compound in which rotation around a carbon bond is restricted, as in (cis) and (trans) configurations know as geometric isomerism.

Relative stability of cyclohexane: The most stable conformation of cyclohexane is the chair shown to the right, the respective carbon (-C-C-) bonds are it close to (109.5⁰), it is almost free of angle strain, it is also a fully staggered conformation and so is free of torsional strain. So the chair conformation is the most stable conformation.

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