Absolute rate constants for hydrogen abstraction from hydrocarbons by the trichloromethylperoxyl radical

S. Mosseri; Z. B. Alfassi; P. Neta

doi:10.1002/kin.550190405

Absolute rate constants for hydrogen abstraction from hydrocarbons by the trichloromethylperoxyl radical

S. Mosseri, Z. B. Alfassi, P. Neta

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Absolute rate constants have been measured for the reactions of trichloromethylperoxyl radicals with cyclohexane, cyclohexene, and hexamethylbenzene. The CCl₃O₂ radicals were produced by pulse radiolysis of air‐saturated CCl₄ solutions containing various amounts of the hydrocarbons. The rate constants were determined by competition with the one‐electron oxidation of metalloporphyrins, using the rate of formation of the metalloporphyrin radical cation absorption to monitor the reaction by kinetic spectrophotometry. The rate constants for hydrogen abstraction from cyclohexane, cyclohexene, and hexamethylbenzene were found to be 1 × 10³, 1.0 × 10⁵, and 7.5 × 10⁴ M⁻¹ s⁻¹, respectively.

Original language	English
Pages (from-to)	309-317
Number of pages	9
Journal	International Journal of Chemical Kinetics
Volume	19
Issue number	4
DOIs	https://doi.org/10.1002/kin.550190405
State	Published - 1 Jan 1987
Externally published	Yes

ASJC Scopus subject areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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title = "Absolute rate constants for hydrogen abstraction from hydrocarbons by the trichloromethylperoxyl radical",

abstract = "Absolute rate constants have been measured for the reactions of trichloromethylperoxyl radicals with cyclohexane, cyclohexene, and hexamethylbenzene. The CCl3O2 radicals were produced by pulse radiolysis of air‐saturated CCl4 solutions containing various amounts of the hydrocarbons. The rate constants were determined by competition with the one‐electron oxidation of metalloporphyrins, using the rate of formation of the metalloporphyrin radical cation absorption to monitor the reaction by kinetic spectrophotometry. The rate constants for hydrogen abstraction from cyclohexane, cyclohexene, and hexamethylbenzene were found to be 1 × 103, 1.0 × 105, and 7.5 × 104 M−1 s−1, respectively.",

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AU - Mosseri, S.

AU - Alfassi, Z. B.

AU - Neta, P.

PY - 1987/1/1

Y1 - 1987/1/1

N2 - Absolute rate constants have been measured for the reactions of trichloromethylperoxyl radicals with cyclohexane, cyclohexene, and hexamethylbenzene. The CCl3O2 radicals were produced by pulse radiolysis of air‐saturated CCl4 solutions containing various amounts of the hydrocarbons. The rate constants were determined by competition with the one‐electron oxidation of metalloporphyrins, using the rate of formation of the metalloporphyrin radical cation absorption to monitor the reaction by kinetic spectrophotometry. The rate constants for hydrogen abstraction from cyclohexane, cyclohexene, and hexamethylbenzene were found to be 1 × 103, 1.0 × 105, and 7.5 × 104 M−1 s−1, respectively.

AB - Absolute rate constants have been measured for the reactions of trichloromethylperoxyl radicals with cyclohexane, cyclohexene, and hexamethylbenzene. The CCl3O2 radicals were produced by pulse radiolysis of air‐saturated CCl4 solutions containing various amounts of the hydrocarbons. The rate constants were determined by competition with the one‐electron oxidation of metalloporphyrins, using the rate of formation of the metalloporphyrin radical cation absorption to monitor the reaction by kinetic spectrophotometry. The rate constants for hydrogen abstraction from cyclohexane, cyclohexene, and hexamethylbenzene were found to be 1 × 103, 1.0 × 105, and 7.5 × 104 M−1 s−1, respectively.

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JO - International Journal of Chemical Kinetics

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ER -

Absolute rate constants for hydrogen abstraction from hydrocarbons by the trichloromethylperoxyl radical

Abstract

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