Abstract

The reaction kinetics of NH 2 with propylene is studied by flash photolysis in the temperature range 300-500K. The NH 2 radicals are detected by resonance absorption, using a cw single mode dye laser. This method allows the detection of very small radical concentrations in a wide range of experimental conditions. The reaction of NH 2 with propylene is fairly slow and seems to correspond to the addition process. The Arrhenius expression obtained is ( E in kcal/mole): k(NH 2 + C 3H 6) = 2.9 × 10 8 exp[-4.3(± 0.2)[ RT]M −1s −1.

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