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):   Johnson, D.; Carr, S.; Cox, R.A.
Title:   The kinetics of the gas-phase decomposition of the 2-methyl-2-butoxyl and 2-methyl-2-pentoxyl radicals
Journal:   Phys. Chem. Chem. Phys.
Volume:   7
Page(s):   2182 - 2190
Year:   2005
Reference type:   Journal article
Squib:   2005JOH/CAR2182-2190

Reaction:   (CH3)2C(O·)CH2CH2CH3(CH3)2CO + n-C3H7
Reaction order:   1
Reference reaction:   (CH3)2C(O·)CH2CH2CH3 → (CH3)2C(OH)CH2CH2CH2·
Temperature:   283 - 345 K
Pressure:  1.01 bar
Rate expression:   4.5x10-12 [s-1] e-47400 [±16200 J/mole]/RT
Category:  Experiment
Data type:   Relative value normalized by a reference value
Pressure dependence:   None reported
Experimental procedure:   Static or low flow - Data taken vs time
Excitation technique:   Direct photolysis
Time resolution:   By end product analysis
Analytical technique:   Gas chromatography
Comments:   Rates for the reference reaction were obtained from literature recommendation. Uncertainties associated with the preexponential factor are very large, with the following range of values: 1.7x10e7 - 1.2x1018 s-1.

View full bibliographic record.

Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [s-1]
283 8.03E-21
300 2.51E-20
325 1.08E-19
345 3.00E-19