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Title: A systematic investigation into the mechanism of the reaction between CF3 radicals and CO/O2
Journal: Chem. Euro. J.
Volume: 10
Page(s): 1838 - 1844
Year: 2004
Reference type: Journal article
Squib: 2004PAC/ARG1838-1844
Reaction:
·CF3 + O2 → Products
Temperature:
273
K
Pressure: 0.11 - 0.32 bar
Rate expression:
no rate data available
Category: Experiment
Data type:
Mechanistic information only
Pressure dependence:
None reported
Experimental procedure:
Other
Excitation technique:
Flash photolysis (laser or conventional)
Time resolution:
By end product analysis
Analytical technique:
Fourier transform (FTIR)
Comments:
The authors studied the reaction of CF3 radicals in the presence of various isotopically labeled O2 and CO at temperatures near 273 K.. CF3 was formed by the UV photolysis of perfluoroacetic anhydride at 254 nm. All the possible isotopomers of the intermediated trioxide, CF3OC(O)OOOC(O)OCF3 and the stable peroxide CF3OC(O)OOC(O)OCF3 were selectively formed. Analyssi was by FTIR spectroscopy and ab iito calculations. The authors conclude that the acyloxy raadical CF3OCO2 must have a lifetime longer than previously thought near 273 K.
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