A Laser Flash Photolysis, Time-Resolved Fourier Transform Infrared Emission Study of the Reaction Cl + C2H5 -> HCl(υ) + C2H4

Article abstract of DOI:10.1021/j100123a029

The atom-radical reaction Cl + C2H5 -> HCl(υ) + C2H4 is studied using laser flash photolysis, time-resolved Fourier transform infrared emission spectroscopy and broad band infrared chemiluminescence.The Cl atoms and ethyl radicals are produced from a number of different precursors using one or two lasers.The initial HCl vibrational distribution is determined to be HCl (υ=1/2/3/4=0.39+/-0.04/0.29+/-0.03/0.22+/-0.02/0.10+/-0.02).The vibrational distribution is characteristic of an addition-elimination mechanism and can be reproduced using modified statistical theories of energy partitioning within the (excit.) intermediate.The time evolution of the HCl(υ=4) emission is used to estimate a rate coefficient for this reaction of (3.0+/-1.0)*10^-10 cm³ molecule^-1 s^-1.