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©NIST, 2013
Accessibility information
Author(s):   Kaiser, EW; Pierce, DS
Title:   Study of the Thermodynamics (Thermal and Cl Catalyzed) and Kinetics of the Cis and Trans Isomerizations of CF3CF=CHF, CF3CH=CHCF3, and CH3CH=CHCH3 in 100-950 Torr of N2 Diluent at 296-875 K: Effect of F and CF3 Substitution on the Isomerization Process Including the Fluorine "Cis Effect"
Journal:   J. Phys. Chem. A
Volume:   119
Page(s):   9000 - 9017
Year:   2015
Comments:   10.1021/acs.jpca.5b06265
Reference type:   Journal article
Squib:   2015KAI/PIE9000-9017

Reaction:   (Z)-2-C4H8(E)-2-C4H8
Reaction order:   1
Temperature:   751 - 874 K
Pressure:  0.99 - 1.09 bar
Rate expression:   8.9x1013 [s-1] e-264617 [±2824 J/mole]/RT
Category:  Experiment
Data type:   Absolute value measured directly
Pressure dependence:   Rate constant is high pressure limit
Experimental procedure:   Static or low flow - Data taken vs time
Excitation technique:   Direct photolysis
Time resolution:   In real time
Analytical technique:   Gas chromatography
Comments:   The uncertainty in the preexponential factor is expressed as follows: A = 1013.95 ± 0.23 s-1.

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Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [s-1]
751 3.51E-5
775 1.30E-4
800 4.70E-4
825 1.57E-3
850 4.88E-3
874 1.36E-2