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Conversion effect on the reaction CF3 + HCN. Analysis of I2 and I participation with CF3I as radical source

✍ Scribed by S. I. Lane; E. V. Oexler; E. H. Staricco

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
477 KB
Volume
16
Category
Article
ISSN
0538-8066

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✦ Synopsis

The gas-phase reaction of CF, with HCN has been examined over a wide conversion range using CF,I as a thermal and photolytic source of radicals. Quantitative and qualitative results show a significant increase of the specific rate constant for the hydrogen abstraction reaction relative to CF, recombination when reaction is carried out under ultraviolet irradiation. This "extra" formation of the reaction product, CF,H, has been assigned to the participation of iodine in this system through the formation of a (I-HCN) intermediate. Arrhenius parameters obtained for the addition mechanism of I to HCN do not seem to conform to a single reaction step, on the contrary, they correspond to a more complex reaction scheme.

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