KINETIC-STUDY OF OH RADICAL REACTIONS WITH CHLOROBUTANE ISOMERS AT 298 K

The rate constant of hydroxyl radical reactions with the four chlorobu tane isomers have been determined using a fast flow reactor. The value s in cm(3) molecule(-1) s(-1) are: k(1) (OH + 1-chlorobutane) = (2.00 +/- 0.15) x 10(-12), k(2) (OH + 2-chlorobutane) = (2.45 +/- 0.30) x 10 (-12), k(3) (OH + 1-chloro-2-methylpropane) = (1.95 +/- 0.20) x 10(-12 ), k(4) (OH + 2-chloro-2-methylpropane)= (0.45 +/- 0.10) x 10(-12). Th e quoted errors include both statistical deviations (2 sigma generally < 5%) and estimated systematic uncertainties (10-20%). Adjustments of structure activity relationships are suggested. (C) 1998 Elsevier Sci ence B.V. All rights reserved.