CN radical reactions with hydrogen cyanide and cyanogen: Comparison of theory and experiment

D. L. Yang*, T. Yu, Ming-Chang Lin, C. F. Melius

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

36 Scopus citations

Abstract

Absolute rate constants were obtained for CN radical reactions with HCN and C2N2 employing the method of laser photolysis/laser induced fluorescence. The rate constants were found to be temperature dependent in the range 300-740 K and pressure independent in the range 100-600 Torr. The rates for CN + HCN may be described well, in units of cm3/s, by k(HCN) = 2.50×10-17T1.71 exp( - 770/T), which includes the shock tube results of Szekely et al. at 3000 K [Int. J. Chem. Kinetics 15, 1237 (1983)]. The measured rates for CN + C2N 2 may be described well by k(C2N2) = 2.19×10-21T2.70 exp( - 325/T). Rice-Ramsperger- Kassel-Marcus (RRKM) theory calculations employing transition state parameters predicted by the BAC-MP4 method were able to account for the effects of temperature and pressure on both reactions.

Original languageEnglish
Pages (from-to)222-226
Number of pages5
JournalThe Journal of Chemical Physics
Volume97
Issue number1
DOIs
StatePublished - 1 Jan 1992

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