It has been established that the para-substituent effect on the rates of solvolysis of (1- arylcycloalkylhrbinyl arenesulfonates can be used to assess the ability of cycloalkyl groups to assist ionization by carbon a-participation. 2 For example, by measuring the solvolysis rates ofpuru-substituted (1-phenylcyclopropylbirbinyl and (1-phenylcyclobuty1) carbinyl arenesulfonates and comparing their (koMeIkN02) rate ratios with that of similarly ...