Rates of reactions of O(/sup 3/P) with benzene and toluene
Absolute rate coefficients for the reaction of O(/sup 3/P) with C/sub 6/H/sub 6/ (k/sub 1/), C/sub 6/D/sub 6/ (k/sub 2/), C/sub 6/H/sub 5/CH/sub 3/ (k/sub 3/), and C/sub 6/H/sub 6/CD/sub 3/ (k/sub 4/) were measured, over the temperature range 298 to 950 K, by using the technique of flash photolysis-resonance fluorescence. The measured bimolecular rate coefficients increase monotonically with temperature and yield the following Arrhenius expressions (in units of cm/sup 3/ molecule/sup -1/ s/sup -1/):k/sub 1/ = (4.62 +- 0.68) x 10/sup -11/ exp(-(2.47 +- 0.08) x 10/sup 3//T), k/sub 2/ = (4.4 +- 1.1) x 10/sup -11/ exp(-(2.45 +- 0.13) x 10/sup 3//T), k/sub 3/ = (4.26 +- 0.58) x 10/sup -11/ exp(-(1.91 +- 0.07) x 10/sup 3//T), and k/sub 4/ = (3.71 +- 0.77) x 10/sup -11/ exp(-(1.88 +- 0.10) x 10/sup 3//T). The isotopic substitution of ring hydrogen in the case of benzene and the side-chain hydrogen in the case of toluene did not affect the rate coefficient, i.e., k/sub 1/ approx. = k/sub 2/ and k/sub 3/ approx. = k/sub 4/. Kinetic and mechanistic information derived from these measurements is discussed.
- Research Organization:
- Georgia Inst. of Tech., Atlanta
- OSTI ID:
- 6771027
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 86:9; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400500 -- Photochemistry
AROMATICS
ATOMS
BENZENE
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DEUTERIUM COMPOUNDS
ELEMENTS
ENERGY LEVELS
EXPERIMENTAL DATA
FLUORESCENCE
GROUND STATES
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
KINETICS
LUMINESCENCE
MEDIUM TEMPERATURE
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN
OZONE
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
REACTION KINETICS
TEMPERATURE DEPENDENCE
TOLUENE