Chirality in Molecules The cis isomer is achiral. The trans isomer is chiral. Enantiomers:nonsuperimposable mirror images, different molecules. same compound different compounds H cis-1,2-dichlorocyclopentane trans-1,2-dichlorocyclopentane (achiral) (chiral) Copyright 2010 Pearson Prentice Hall,Inc.Chirality in Molecules ❖The cis isomer is achiral. ❖The trans isomer is chiral. ❖Enantiomers: nonsuperimposable mirror images, different molecules