Abstract
The kinetics and mechanism of the reaction of chlorine atoms with acrylonitrile (CH 2CHCN) (1) have been studied by the mass spectrometric discharge-flow method in the temperature range (260–333) K and at a total pressure between 0.5 and 3 Torr. At 1.0 Torr the following Arrhenius expression for the rate constant has been obtained from the kinetics of Cl radical consumption in excess of CH 2CHCN: k 1=(5.2±1.6)×10 −14exp[(1400±100/ T)] cm 3 molecule −1 s −1. The reaction is found to proceed through an addition mechanism involving a relatively stable adduct. The atmospheric significance of the present results for acrylonitrile is also discussed.
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