Chiral Centers in Chiral Molecules ■ Groups are considered"different"if there is any structural variation(if the groups could not be superimposed if detached,they are different) In cyclic molecules,we compare by following in each direction in a ring Symmetry plane Methylcyclohexane 2-Methylcyclohexanone (achiral) (chiral) Chiral Centers in Chiral Molecules „ Groups are considered “different” if there is any structural variation (if the groups could not be superimposed if detached, they are different) „ In cyclic molecules, we compare by following in each direction in a ring