Chapter 19, Problem 83AE

Interpretation Introduction

Interpretation:

The possible isomers formed from the given substituted benzenes has to be determined and the structures for the dibromobenzene and tribromobenene has to be drawn separately.

Concept Introduction:

For monosubstituted benzene:

Monosubstituted benzenes are organic compounds that are derived from the benzene by substituting one of the benzene’s hydrogens with an atom or a group of atoms. The general molecular formula for the monosubstituted benzene is ${\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{G}$. Here, $\text{G}$ is the atom or group of atoms substituting one of the benzene’s hydrogens.

For disubstituted benzene:

Disubstituted benzenes are replaced by two benzene’s hydrogens with two atoms or groups of atoms. The disubstituted can form three isomers namely, ortho-isomers, meta-isomers and para-isomers. The general molecular formula for the disubstituted benzene is ${\text{C}}_{\text{6}}{\text{H}}_{\text{4}}{\text{G}}_2$. Here, $\text{G}$ is the atom or group of atoms substituting one of the benzene’s hydrogens.

For trisubstituted benzene:

If two substituent atoms or groups substitute two benzene’s hydrogens in the benzene ring, then the compound is called trisubstituted benzene. The general molecular formula for the trisubstituted benzene is ${\text{C}}_{\text{6}}{\text{H}}_{\text{3}}{\text{G}}_3$. Here, $\text{G}$ is the atom or group of atoms substituting one of the benzene’s hydrogens.