Draw the stereoisomers of trichlorocyclopropane, indicating which are chiral.

SOLUTION:

Trichlorocyclopropane has two structural isomers, depending on the position of the chlorines in the molecule.

Stereoisomers are built by placing the chlorines in space. 1,1,3-Trichlorocyclopropane can exist as two enantiomers (chiral molecules).

1,2,3-Trichlorocyclopropane has two stereoisomers, both meso (achiral).

The presence of a plane of symmetry prevents these molecules from having an enantiomer.