Rate constants for the reactions of hydrogen atoms with SiHnF4 - n (n = 4, 3, 2)

Mitsuo Koshi*, Fumitaka Tamura, Hiroyuki Matsui

*Corresponding author for this work

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

A VUV LIF detection of H atoms has been applied to the direct measurements of rate constants for the title reactions in ArF laser photolysis experiments at T = 293±2 K. The observed rate constants were k(H + SiH4) = (2.2±0.2) × 10-13, k(H + SiH3F) = (1.1±0.2) × 10-13, and k(H + SiH2F2) = (2.1±0.6) × 10-14 cm3 molecule-1 s-1. These rate constants were compared to those of other H atom abstraction reactions and linear correlations were found between log k and SiH bond dissociation energies for reactions of H + RH → R + H2, as was already suggested for hydrogen abstraction reactions in single-bond hydrocarbons.

Original languageEnglish
Pages (from-to)235-240
Number of pages6
JournalChemical Physics Letters
Volume173
Issue number2-3
DOIs
StatePublished - 5 Oct 1990

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