Arrhenius-Parameter und kinetischer Isotopeneffekt für die Reaktion von Wasserstoffatomen mit Silan

Abstract

The Reaction of Hydrogen Atoms with Silane; Arrhenius Parameters and Kinetic Isotope Effect Relative rate constants were measured for the systems H + C₂H₄/SiD₄ and D + C₂D₄/SiH₄ over a wide temperature range. From the known arrheniusparameter for the reaction H + C₂H₄ the activation energy E_A and the preexponential factor A of the abstraction reaction H + SiD₄ → HD + SiD₃ may be calculated. Values of E_A = 3.2 kcal/Mol and A = 4.92 • 10¹³ cm³ Mol^-1 sec^-1 were obtained. Upper limits for the kinetic isotope effects are given in the paper