What are the structures of the isomers of dichloropropane?

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Answer 1 · 2015-11-11T23:26:08

See below.

Start with a #"Cl"# at one end and then put a second #"Cl"# in every possible position.

This gives us

1. #"CH"_3"CH"_2"CHCl"_2#, 1,1-dichloropropane

and

2. #"CH"_3"CHClCH"_2"Cl"#, 1,2-dichloropropane

and

3. #"ClCH"_2"CH"_2"CH"_2"Cl"#, 1,3-dichloropropane

Now put a #"Cl"# on the middle carbon and put the second #"Cl"# in all possible locations.

This gives only one more isomer

#"CH"_3"CCl"_2"CH"_3#, 2,2-dichloropropane

And there you have the four isomers of dichloropropane.