What are the structures of the isomers of dichloropropane?

Nov 11, 2015

See below.

Explanation:

Start with a $\text{Cl}$ at one end and then put a second $\text{Cl}$ in every possible position.

This gives us

1. ${\text{CH"_3"CH"_2"CHCl}}_{2}$, 1,1-dichloropropane

and

2. $\text{CH"_3"CHClCH"_2"Cl}$, 1,2-dichloropropane

and

3. $\text{ClCH"_2"CH"_2"CH"_2"Cl}$, 1,3-dichloropropane

Now put a $\text{Cl}$ on the middle carbon and put the second $\text{Cl}$ in all possible locations.

This gives only one more isomer

${\text{CH"_3"CCl"_2"CH}}_{3}$, 2,2-dichloropropane

And there you have the four isomers of dichloropropane.