Time-Resolved Tunable Diode Laser Detection of Products of the Infrared Multiphoton Dissociation of Hexafluoroacetone: A Line-Strength and Band-Strength Measurement for CF3

Article abstract of DOI:10.1021/j100329a018

This paper describes the time resolved detection of CF3, C2F6, and CO following the infrared multiphoton dissociation of hexafluoroacetone.The primary photolysis mechanism has been estalished as follows: (CF3)2CO -> 2CF3 + CO; 2CF3 -> C2F6.Determination of the CO and C2F6 formed in a single photolysis pulse leads to a measure of an infrared line strength and ν₃ band strength for CF3.Quantification of the CF3 in this manner allows a study of its reaction kinetics.The reactions of CF3 with added O2 and NO were found to have third-body rate constants of (2.1 +/- 0.5) * 10^-29 and (2.8 +/- 0.7) * 10^-29 cm⁶ molecule^-2 s^-1, respectively, at room temperature in the presence of 600 mTorr of hexafluoroacetone.