Chapter 23, Problem 23.60SP

(a)

Interpretation Introduction

Interpretation:

It should be determined that whether the given compound $\text{1-Hexene}$ is capable of cis-trans isomerism or not.

Concept introduction:

Alkenes are one of the important types of hydrocarbon which have at least one carbon-carbon double bond ($C=C$ ).   According to the International Union for Pure and Applied Chemistry the name of an alkane ends with ene.   Alkenes have a general formula $C_n{H}_{2n}$ where n is the number of carbon atom.

The double bond of alkenes form a rigid structure around which the atoms cannot rotate as in alkenes. This leads to a form of isomerism referred to as cis-trans isomers.

Cis-trans isomerism:

The two similar groups (or higher priority groups) are in same side in double bond of alkenes is called as cis isomer (or Z-isomer).  Two similar groups (or higher priority groups) are opposite side in double bond of alkenes is called as trans isomer (or E-isomer).

Example:

(b)

Interpretation Introduction

Interpretation:

It should be determined that whether the given compound $\text{2-Hexene}$ is capable of cis-trans isomerism or not.

Concept introduction:

Alkenes are one of the important types of hydrocarbon which have at least one carbon-carbon double bond ($C=C$ ). According to the International Union for Pure and Applied Chemistry the name of an alkane ends with ene. Alkenes have a general formula $C_n{H}_{2n}$ where n is the number of carbon atom.

The double bond of alkenes form a rigid structure around which the atoms cannot rotate as in alkenes. This leads to a form of isomerism referred to as cis-trans isomers.

Cis-trans isomerism:

The two similar groups (or higher priority groups) are in same side in double bond of alkenes is called as cis isomer (or Z-isomer).  Two similar groups (or higher priority groups) are opposite side in double bond of alkenes is called as trans isomer (or E-isomer).

Example:

(c)

Interpretation Introduction

Interpretation:

It should be determined that whether the given compound $\text{3-Hexene}$ is capable of cis-trans isomerism or not.

Concept introduction:

Alkenes are one of the important types of hydrocarbon which have at least one carbon-carbon double bond ($C=C$ ). According to the International Union for Pure and Applied Chemistry the name of an alkane ends with ene. Alkenes have a general formula $C_n{H}_{2n}$ where n is the number of carbon atom.

The double bond of alkenes form a rigid structure around which the atoms cannot rotate as in alkenes. This leads to a form of isomerism referred to as cis-trans isomers.

Cis-trans isomerism:

The two similar groups (or higher priority groups) are in same side in double bond of alkenes is called as cis isomer (or Z-isomer).  Two similar groups (or higher priority groups) are opposite side in double bond of alkenes is called as trans isomer (or E-isomer).

Example: