| Abstract: | The hydrogen abstraction reactions of tert-butoxyl with germane, phosphine, and trimethylsilane were studied by pyrolyzing di-t-butyl peroxide in the temperature range of 403 to 458 K. From the reported rate constant for the tert-butoxy radical decomposition in the literature, the absolute rate constants were determined from the study of competitive reaction between t-butoxy radical decomposition  and hydrogen abstraction reaction. (t-BuO + RH → t-BuOH + R, where RH = GeH4, PH3, and HSiMe3) The Arrhenius parameters are found to be as follows: | Ea(kcal mol?1) | Log A(1.mol?1s?1) | | t-BuO + SiHMe3 | 2.1 | 8.5 | | t-BuO + GeH4 | 1.9 | 9.1 | | t-BuO + PH3 | 1.4 | 9.0 |  Volume 18 , Issue 2 February 1986 Pages 267-279 |
