Arrhenius parameters for silene insertion reactions

P. John, J. H. Purnell

Research output: Contribution to journalArticle

Abstract

Co-pyrolyses of disilane with monosilane or with hydrogen have been conducted over wide ranges to temperature, pressure and mixture composition. The following Arrhenius parameters for the silene insertion reactions have been calculated from the rate data and thermochemical information: SiH2 + SiH4 ? Si2 H6 (-1), SiH2 + Si2H6 ? Si3 H8 (2), SiH 2 + H2 ? SiH4 (5), log(A-1/l. mol-1 s-1) = 9.7, E-1 = 5400 J mol -1; log(A2/l. mol-1 s-1) = 9.85, E2 = 1615 J mol-1; log(A5/l. mol-1 s-1) = 9.1; E5 = 23 000 J mol-1. Disilane is shown to be a suitable source of silene and the data presented for k2 and E2 now permit extension of the co-pyrolysis method to the evaluation of the rate parameters of a range of other silene insertion reactions.

Original languageEnglish
Pages (from-to)1455-1461
Number of pages7
JournalJournal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
Volume69
DOIs
Publication statusPublished - 1973

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