The acid-catalyzed thermal decompositions of a number of substituted l-aryl-3, 3- dialkyltriazenes(1) in the presence of nucleophiles have been conducted with a view to understanding the underlying mechanisms of these reactions. These reactions parallel the corresponding diazonium ion reactions in that a heterolytic dediazoniation path competes with a homolytic route. The relative proportion of the products arising due to these two ...