Dibenzoyl peroxide catalyzed addition of bromotrichloromethane to various types of vinyl- and w-alkenylsilanes have been investigated. Six new addition compounds have been prepared and characterized. It has been found that the reactivity of the double bond in the series of R (CH3) aSiCH= CH2, where R= Me, Et, i-Pr, and t-Bu, t, oward addition of the trichloromethyl radical is governed by the Taft steric factor, E., of R, while the reactivity in ...