The CH2CHO + O channel of the reaction of vinyl radical with O2

Tatsuo Oguchi; Yoshihisa Sato; Hiroyuki Matsui

doi:10.1016/j.cplett.2009.03.012

The CH₂CHO + O channel of the reaction of vinyl radical with O₂

Tatsuo Oguchi^*, Yoshihisa Sato, Hiroyuki Matsui

^*Corresponding author for this work

Department of Applied Chemistry

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

5 Scopus citations

Abstract

The reaction kinetics of C₂H₃ + O₂ has been studied at room temperature, where, CH₂CHO produced in this reaction is monitored quantitatively by using a laser induced fluorescence technique. The reaction rate constant is obtained as (8.5 ± 1.0) × 10^-12 cm³ molecule^-1 s^-1 with almost no pressure dependence for the range of 10-100 Torr (He): the present result is consistent with the previous experimental studies. Also by using two different precursors as a source of C₂H₃, the branching fraction of producing CH₂CHO + O channel is determined as φ{symbol}(CH₂CHO) = 0.14-0.21, i.e., O-O bond scission in the reaction intermediate, vinylperoxy radical, is confirmed, exhibiting clear contrast to alkylperoxy radicals.

Original language	English
Pages (from-to)	181-184
Number of pages	4
Journal	Chemical Physics Letters
Volume	472
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2009.03.012
State	Published - 20 Apr 2009

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title = "The CH2CHO + O channel of the reaction of vinyl radical with O2",

abstract = "The reaction kinetics of C2H3 + O2 has been studied at room temperature, where, CH2CHO produced in this reaction is monitored quantitatively by using a laser induced fluorescence technique. The reaction rate constant is obtained as (8.5 ± 1.0) × 10-12 cm3 molecule-1 s-1 with almost no pressure dependence for the range of 10-100 Torr (He): the present result is consistent with the previous experimental studies. Also by using two different precursors as a source of C2H3, the branching fraction of producing CH2CHO + O channel is determined as φ{symbol}(CH2CHO) = 0.14-0.21, i.e., O-O bond scission in the reaction intermediate, vinylperoxy radical, is confirmed, exhibiting clear contrast to alkylperoxy radicals.",

author = "Tatsuo Oguchi and Yoshihisa Sato and Hiroyuki Matsui",

year = "2009",

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doi = "10.1016/j.cplett.2009.03.012",

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volume = "472",

pages = "181--184",

journal = "Chemical Physics Letters",

issn = "0009-2614",

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T1 - The CH2CHO + O channel of the reaction of vinyl radical with O2

AU - Oguchi, Tatsuo

AU - Sato, Yoshihisa

AU - Matsui, Hiroyuki

PY - 2009/4/20

Y1 - 2009/4/20

N2 - The reaction kinetics of C2H3 + O2 has been studied at room temperature, where, CH2CHO produced in this reaction is monitored quantitatively by using a laser induced fluorescence technique. The reaction rate constant is obtained as (8.5 ± 1.0) × 10-12 cm3 molecule-1 s-1 with almost no pressure dependence for the range of 10-100 Torr (He): the present result is consistent with the previous experimental studies. Also by using two different precursors as a source of C2H3, the branching fraction of producing CH2CHO + O channel is determined as φ{symbol}(CH2CHO) = 0.14-0.21, i.e., O-O bond scission in the reaction intermediate, vinylperoxy radical, is confirmed, exhibiting clear contrast to alkylperoxy radicals.

AB - The reaction kinetics of C2H3 + O2 has been studied at room temperature, where, CH2CHO produced in this reaction is monitored quantitatively by using a laser induced fluorescence technique. The reaction rate constant is obtained as (8.5 ± 1.0) × 10-12 cm3 molecule-1 s-1 with almost no pressure dependence for the range of 10-100 Torr (He): the present result is consistent with the previous experimental studies. Also by using two different precursors as a source of C2H3, the branching fraction of producing CH2CHO + O channel is determined as φ{symbol}(CH2CHO) = 0.14-0.21, i.e., O-O bond scission in the reaction intermediate, vinylperoxy radical, is confirmed, exhibiting clear contrast to alkylperoxy radicals.

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