Figure 8.

Rate dependence on the nature of the counterion, X, in HKR experiments in which catalyst was added as the last reagent (i.e., 0 min delay time). Plot of the rates of hydrolysis of (S)-1,2-epoxyhexane ([epoxide]_i = 5.4 M) in 1,2-hexanediol versus time in 1,2-hexanediol ([H₂O]_i = 3.1 M). In each experiment, (R,R)-(salen)Co–X (0.15 mol %) was added to a reaction mixture containing epoxide, diol, and water as an 83 mM CH₂Cl₂ solution.