How many stereoisomers are possible for 2-methyl-1,3-dichlorohexane?

1 Answer
Apr 10, 2016

There are four possible stereoisomers for 2-methyl-1,3-dichlorohexane.


The structure of 2-methyl-1,3-dichlorohexane is

#"ClCH"_2 stackrelcolor(blue)("*")("C")"H"("CH"_3)stackrelcolor(blue)("*")("C")"HClCH"_2"CH"_2"CH"_3#.

We see that there are two chiral carbons (marked with an asterisk) — they are attached to four different groups.

The maximum number of stereoisomers is #2^n#, where #n# is the number of chiral centres.

There is no internal plane of symmetry, so the number of stereoisomers is #2^2 = 4#.

Their structures are

4 Stereoisomers