Matrix isolation of intermediates on the activated surface of silicon dioxide: The capabilities of the technique in the studies of mechanisms and efficiencies of chemical reactions

The article presents the results of experimental mechanistic studies of the rmal and photochemical reactions involving active intermediates (radicals o f various types and silylenes) grafted to an activated surface of silica di oxide. Matrix isolation technique of matrix isolation on a surface is appli cable to the study of stepwise chemical transformations and the quantitativ e characteristics of the reactivity of intermediates. Examples of the effec t of the state of an activated surface on the direction of transformations involving intermediates and photoinduced transformations of the intermediat es under these conditions are considered. The prospects for the development and possible applications of the technique of surface matrix isolation are discussed.