Abstract
The kinetics and products of the gas-phase reactions of O3 with a series of aliphatic amines and related compounds have been investigated at 298 ± 2 K and 740 Torr total pressure of air. The absolute rate constants obtained (in cm3 molecule-1 s-1 units) were: methylamine, (7.4 ± 2.4) x 10-21; dimethylamine, (1.67 ± 0.20) x 10-18; trimethylamine, (7.84 ± 0.87) x 10-18; 2-(dimethylamino)ethanol, (6.76 ± 0.83) x 10-18; and tetramethylhydrazine, (5.21 ± 0.60) x 10-18. The major products observed from the O3 reactions with the use of in situ FT-IR absorption spectroscopy were: from trimethylamine, (CH3)2NCHO, CH3N=CH2 and HCHO; and from dimethylamine, CH3N=CH2, CH3NO2, and HCHO. Possible reaction mechanisms are presented and discussed.
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