NIST Chemical Kinetics Database

Author(s):   Roussel, P.B.; Lightfoot, P.D.; Caralp, F.; Catoire, V.; Lesclaux, R.; Forst, W.
Title:   Ultraviolet absorption spectra of the CH₂Cl and CHCl₂ radicals and the kinetics of their self-recombination reactions from 273 to 686 K
Journal:   J. Chem. Soc. Faraday Trans.
Volume:   87
Page(s):   2367 - 2377
Year:   1991
Reference type:   Journal article
Squib:   1991ROU/LIG2367-2377

Reaction:   ·CH₂Cl + ·CH₂Cl → CH₂ClCH₂Cl
Reaction order:   2
Temperature:   273 - 686 K
Pressure:  3.87E-2 - 1.01 bar
Rate expression:   2.81x10^-11 [±3.16x10^-12 cm³/molecule s] (T/298 K)^{(-0.85±0.14)}
Bath gas:   N2
Category: Experiment
Data type:   High or low pressure extrapolation
Excitation technique:   Flash photolysis (laser or conventional)
Analytical technique:   Vis-UV absorption

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Rate constant values calculated from the Arrhenius expression:

T (K)	k(T) [cm³/molecule s]
273	3.02E-11
275	3.00E-11
300	2.79E-11
325	2.61E-11
350	2.45E-11
375	2.31E-11
400	2.19E-11
425	2.08E-11
450	1.98E-11
475	1.89E-11
500	1.81E-11
525	1.73E-11
550	1.67E-11
575	1.61E-11
600	1.55E-11
625	1.50E-11
650	1.45E-11
675	1.40E-11
686	1.38E-11