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Author(s):   Baasandorj, M.; Knight, G.; Papadimitriou, V.C.; Talukdar, R.K.; Ravishankara, A.R.; Burkholder, J.B.
Title:   Rate Coefficients for the Gas-Phase Reaction of the Hydroxyl Radical with CH2=CHF and CH2=CF2
Journal:   J. Phys. Chem. A
Volume:   114
Page(s):   4619 - 4633
Year:   2010
Reference type:   Journal article
Squib:   2010BAA/KNI4619-4633

Reaction:   CH2=CHF + ·OH → Products
Reaction order:   2
Temperature:   220 - 373 K
Pressure:  2.67E-2 - 0.54 bar
Rate expression:   1.75x10-12 [±2.0x10-13 cm3/molecule s] e2627 [±208 J/mole]/RT
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 quoted uncertainties are 2σ (95% confidence level) and include estimated systematic errors. Experiments were performed using 16OH and 18OH. Quantum chemical calculations using density functional theory were used to determine the geometries and energies of the reactants and adducts formed in reaction.

View full bibliographic record.


Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [cm3/molecule s]
220 7.36E-12
225 7.13E-12
250 6.19E-12
275 5.52E-12
300 5.02E-12
325 4.63E-12
350 4.32E-12
373 4.08E-12