Chapter 26, Problem 53E

Interpretation Introduction

(a)

Interpretation:

The structural formula of E and Z isomers of 2-chlorobut-2-ene should be determined.

Concept introduction:

Alkenes are unsaturated hydrocarbons with double covalent bond between carbon atoms. On the basis of groups bonded with the double bonded carbon atoms, alkenes can be named as E and Z-configuration. The E-configuration stands for anti-configuration whereas Z stands for same side configuration. The determination of groups must be done on the basis of their molecular mass. The group or atom with high molecular mass must be numbered as 1 and other with 2. If both 1 numbered group/atom are placed at the same side they will consider as Z-configuration and in E-configuration these groups will be at anti-position.

Interpretation Introduction

(b)

Interpretation:

The structural formula of E and Z isomers of 3-methylpent-2-ene should be determined.

Concept introduction:

Alkenes are unsaturated hydrocarbons with double covalent bond between carbon atoms. On the basis of groups bonded with the double bonded carbon atoms, alkenes can be named as E and Z-configuration. The E-configuration stands for anti-configuration whereas Z stands for same side configuration. The determination of groups must be done on the basis of their molecular mass. The group or atom with high molecular mass must be numbered as 1 and other with 2. If both 1 numbered group/atom are placed at the same side they will consider as Z-configuration and in E-configuration these groups will be at anti-position.