Abstract: Structure-migrating group interactions which are present during 1, 2 migrations of alkyl groups Rm (Rm= Me or Et) have been studied as a function of the influence of a variable environment e,, of the origin carbon C, for a fixed environment Ect of the terminal carbon C,, and vice versa, on the partial rate constant (kPRm) for migration in IV. The constants kpRm were determined from a study, in 96% HzS04, of the metathetical ...