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Rate constants for the reactions of Cl atoms with a series of C 6 –C 10 cycloalkanes and cycloketones at 297 ± 2 K
Author(s) -
Aschmann Sara M.,
Atkinson Roger
Publication year - 2013
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.20743
Subject(s) - cyclooctane , chemistry , cycloheptane , cyclohexanone , reaction rate constant , butane , reactivity (psychology) , cycloalkane , computational chemistry , medicinal chemistry , organic chemistry , cyclohexane , kinetics , medicine , physics , alternative medicine , pathology , quantum mechanics , catalysis
Rate constants for the reactions of Cl atoms with cycloheptane, cyclooctane, cyclodecane, cyclohexanone, cycloheptanone, cyclooctanone, and cyclodecanone have been measured at 297 ± 2 K and atmospheric pressure of air using a relative rate method. n ‐Butane, with a rate constant of 2.05 × 10 −10 cm 3 molecule −1 s −1 , was used as the reference compound, and the rate constants obtained (in units of 10 −10 cm 3 molecule −1 s −1 ) were cycloheptane, 4.22 ± 0.15; cyclooctane, 4.57 ± 0.15; cyclodecane, 5.13 ± 0.15; cyclohexanone, 1.79 ± 0.06; cycloheptanone, 2.46 ± 0.07; cyclooctanone, 2.97 ± 0.09; and cyclodecanone, 3.65 ± 0.15, where the indicated errors are two least‐squares standard deviations and do not include uncertainties in the rate constant for the reference compound n ‐butane. Room temperature rate constants for the C 5 –C 10 cycloketones indicate that the CH 2 groups adjacent to the carbonyl group are almost totally deactivated toward H‐atom abstraction by Cl atoms, and this also applies to acyclic ketones. A previous structure–reactivity relationship for Cl + alkanes has been extended to include acyclic and cyclic ketones. © 2012 Wiley Periodicals, Inc. Int J Chem Kinet 45: 52–58, 2013