The reaction H + SiD4 → D + SiH3D is found to have a much lower threshold than the corresponding exchange reaction of H with CD4. The D atom carries away most of the initial translational energy of the H atom. When the H-atom velocity distribution is anisotropic, the D-atom velocity distribution is anisotropic in the same sense. The exchange cross-sections for the reaction H + SiH3D are about one half of those for SiD4. All this evidence leads to the conclusion that the mechanism of the exchange is an inversion.
ASJC Scopus subject areas
- Physics and Astronomy (all)
- Physical and Theoretical Chemistry