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Rate constants for the gas‐phase reactions of the OH radical with the cresols and dimethylphenols at 296 ± 2K
Author(s) -
Atkinson Roger,
Aschmann Sara M.
Publication year - 1990
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550220105
Subject(s) - chemistry , reaction rate constant , molecule , gas phase , substituent , phase (matter) , ring (chemistry) , analytical chemistry (journal) , kinetics , stereochemistry , organic chemistry , physics , quantum mechanics
Using a relative rate technique, rate constants for the gas‐phase reactions of the OH radical with the three cresols and the six dimethylphenols have been determined at 296 ± 2 K and atmospheric pressure. The rate constants for the cresols, which range from 4.3 × 10 −11 cm 3 molecule −1 s −1 to 6.8 × 10 −11 cm 3 molecule −1 s −1 , are in good agreement with previous literature data. The rate constants for 2,3‐, 2,4‐, 2,5‐, 2,6‐, and 3,4‐dimethylphenol are all in the range (6.6–8.1) × 10 −11 cm 3 molecule −1 s −1 , with the rate constant for 3,5‐dimethylphenol being somewhat higher at 1.13 × 10 −10 cm 3 molecule −1 s −1 . Rate constants estimated from the number, identity, and positions of the substituent groups around the aromatic ring agree to within a factor of approximately 2 with these experimentally determined rate constants.