Energy partitioning in some atom/radical reactions found in atmospheric pollution systems

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Abstract
A modification of the arrested relaxation infrared chemiluminescence technique has been used to study the energy disposal in two atom–radical reactions. Vinyl and formyl radicals were generated chemically and their subsequent reactions with O atoms (in the case of vinyl) and F atoms (in the case of formyl) were followed. Product CO emission was observed in the system O/C2H3. Emission from both CO and HF was seen in the F/HCO system. The O/C2H3 reaction gives rise to substantially higher excitation in the CO product than does the F/HCO case. In each case, bound intermediates may be formed; the differences in energy diposal are discussed in terms of the possible influence of these intermediates.

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