Rates of the reactions CN + H2CO and NCO + H2CO in the temperature range 294-769 K

Yu Wei Chang, Niann-Shiah Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The rate coefficients of the reactions: (1) CN + H2CO → products and (2) NCO + H2CO → products in the temperature range 294-769 K have been determined by means of the laser photolysis-laser induced fluorescence technique. Our measurements show that reaction (1) is rapid: k1(294 K) = (1.64 ± 0.25) x 10-11 cm3 molecule-1 s-1; the Arrhenius relation was determined as k1 = (6.7 ± 1.0) x 10-11 exp[ (-412 ± 20) T] cm3 molecule-1 s-1. Reaction (2) is approximately a tenth as rapid as reaction (1) and the temperature dependence of k2 does not conform to the Arrhenius form: k2 = 4.62 x 10-17T1.71 exp( 198 T) cm3 molecule-1 s-1. Our values are in reasonable agreement with the only reported measurement of k1; the rate coefficients for reaction (2) have not been previously reported.

Original languageEnglish
Pages (from-to)431-437
Number of pages7
JournalChemical Physics
Issue number3
StatePublished - 15 Nov 1995

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