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Accessibility information
Author(s):   Dillon, T.J.; Heard, D.E.
Title:   A laser-induced fluorescence study of the O(3P)+CF3I and IO+NO reactions - Evidence for an association channel for O+CF3I at low temperatures
Journal:   J. Photochem. Photobio. A Chem.
Volume:   157
Page(s):   223 - 230
Year:   2003
Reference type:   Journal article
Squib:   2003DIL/HEA223-230

Reaction:   O(3P) + CF3I → Other Products + IO
Reaction order:   2
Temperature:   223 - 523 K
Pressure:  3.33E-2 bar
Rate expression:   9.9x10-12 [±1.0x10-12 cm3/molecule s] e-1930 [±800 J/mole]/RT
Bath gas:   N2
Category:  Experiment
Data type:   Absolute value measured directly
Pressure dependence:   Rate constant is pressure independent
Experimental procedure:   Static or low flow - Data taken vs time
Excitation technique:   Flash photolysis (laser or conventional)
Time resolution:   In real time
Analytical technique:   Laser induced fluorescence
Comments:  
The temporal evolution of IO as a function of [CF3I] was used to determine the rate constant.

The rate constant was found to be pressure independent between 20 Torr and 200 torr when measured at T = 294 K.
The pressure dependence was found at T = 223 K.

View full bibliographic record.


Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [cm3/molecule s]
223 3.50E-12
225 3.53E-12
250 3.91E-12
275 4.26E-12
300 4.57E-12
325 4.85E-12
350 5.10E-12
375 5.33E-12
400 5.54E-12
425 5.73E-12
450 5.91E-12
475 6.07E-12
500 6.22E-12
523 6.35E-12