Kinetics Database Logo

Kinetics Database Resources

Simple Reaction Search

Search Reaction Database

Search Bibliographic Database

Set Unit Preferences


Rate Our Products and Services


Other Databases

NIST Standard Reference Data Program

NIST Chemistry Web Book

NDRL-NIST Solution Kinetics Database

NIST Computational Chemistry Comparison and Benchmark Database

The NIST Reference on Constants, Units, and Uncertainty


Administrative Links

NIST home page

MML home page

Chemical and Biochemical Reference Data Division

MML home page

Chemical and Biochemical Reference Data Division

  NIST Logo Home
©NIST, 2013
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
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