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Rate constants for reactions of OH radicals with a series of asymmetrical ethers and tert ‐Butyl alcohol
Author(s) -
Teton S.,
Mellouki A.,
Le Bras G.,
Sidebottom H.
Publication year - 1996
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/(sici)1097-4601(1996)28:4<291::aid-kin7>3.0.co;2-q
Subject(s) - chemistry , arrhenius equation , ether , radical , reaction rate constant , alcohol , dimethyl ether , medicinal chemistry , atmospheric temperature range , photodissociation , diphenyl ether , photochemistry , analytical chemistry (journal) , methanol , kinetics , activation energy , organic chemistry , thermodynamics , physics , quantum mechanics
Absolute rate constants for the reactions of OH radicals with butyl ethyl ether ( k 1 ), methyl tert ‐butyl ether ( k 2 ), ethyl tert ‐butyl ether ( k 3 ) tert ‐amyl methyl ether ( k 4 ) and tert ‐butyl alcohol ( k 5 ) have been measured over the temperature range 230–372 K using a pulsed laser photolysis‐laser induced fluorescence (PLP‐LIF) technique. The temperature dependence of k 1 − k 5 when expressed in Arrhenius form gave: k 1 = (6.59 ± 0.66) × 10 −12 exp|(362 ± 60)/T|, k 2 = (5.03 ± 0.27) × 10 −12 exp|&minus(133 ± 30)/T|, k 3 = (4.40 ± 0.24) × 10 −12 exp|(210 ± 37)/T|, k 4 = (4.7 ± 0.7) × 10 −12 exp|(82 ± 85)/T|, and k 5 = (2.66 ± 0.48) × 10 −12 exp| −(270 ± 130)/T|. However, the Arrhenius plots for k 1 – k 5 , were slightly curved and are best fitted by the three parameter fits which are given in the article. The room temperature values of k 1 , k 2 , k 3 , k 4 , and k 5 are (2.08 ± 0.23) × 10 −11 , (3.13 ± 0.36) × 10 −12 , (8.80 ± 0.50) × 10 −12 , (6.28 ± 0.45) × 10 −12 , and (1.08 ± 0.10) × 10 −12 , respectively, in cm 3 molecule −1 s −1 . © 1996 John Wiley & Sons, Inc.