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):   Clifford, G.M.; Thuner, L.R.; Wenger, J.C.; Shallcross, D.E.
Title:   Kinetics of the gas-phase reactions of OH and NO3 radicals with aromatic aldehydes
Journal:   J. Photochem. Photobiol. A Chem.
Volume:   176
Page(s):   172 - 182
Year:   2005
Reference type:   Journal article
Squib:   2005CLI/THU172-182

Reaction:   3-Methylbenzaldehyde + ·OH → Products
Reaction order:   2
Temperature:   295 K
Pressure:  1.01 bar
Rate expression:   2.07x10-11 [±2.4x10-12 cm3/molecule s]
Category:  Experiment
Data type:   Relative rate value measured
Pressure dependence:   Rate constant is pressure independent
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:   Hydroxyl radicals produced by the photolysis of methyl nitrate in the presence of NO and O2.
Benzaldehyde, n-hexand, diethyl ether, 1,2,4-trimethylbenzene, and n-butyl ether all used as reference compounds.

Reactivity of aromatic aldehydes toward OH follows a linear free energy relationship typical of addition reactions, although the overall reaction is H-abstraction.

View full bibliographic record.