RATE DATA FROM INDUCTION PERIOD DETERMINATIONS FOR ALKYLMAGNESIUM ANDPHENYLMAGNESIUM BROMIDE FORMATION

induction periods for the Grignard reagent formation from RBr(R=Et, i- Pr, n-Bu, i-Bu, t-Bu, c-Hex, Ph) and t-BuCl in the presence of additio ns of inhibitors (H2O, n-BuOH) were determined. Initiation constants o f the reaction, k were calculated. Extrapolation of the dependence, k vs. initial concentration of the inhibitor, to the zero concentration yields k, independent of added inhibitors. It is suggested that relat ive values of k are the relative rate constants for the Grignard reag ent formation.