Abstract
The protonation rate constants k po , extrapolated in ionic strength μ = 0, of acid-catalyzed hydrolysis of diphehyldizomethane, 9-diazofluorene, phenylbenzoyldiazomethane and 2-diazo-acenaphthen-1-one in dioxane-water mixtures have been determined. The hydrolysis of this compound proceeds by rate-controlling protonation and subsequent rapid decomposition of the diazonium ions (A-S E2-mechanism). The values of K po which are obtained from the dependence of the pseudo first order rate contant k 1 on the concentration of perchloric acid and on the ionic strength, permit a quantitative comparison of the basicity of the investigated diazo compounds.
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