Difference Between Sn1 And Sn2

The Major Difference Between Sn1 And Sn2 is that Sn1 unimolecular reaction having a two-step mechanism. the product formation takes place by a carbocation given by tertiary alkyl halides. while Sn2 is a bimolecular reaction having a one-step mechanism. product formation takes place by TS given by methanol halides.