Pulse radiolysis study of CF3CCI2 and CF3CCI2O2 radicals in the gas phase at 295K

T. J. Wallington; T. Ellermann; OLE J. Nielsen

doi:10.1163/156856794X00333

Pulse radiolysis study of CF₃CCI₂ and CF₃CCI₂O₂ radicals in the gas phase at 295K

T. J. Wallington^*, T. Ellermann, OLE J. Nielsen

^*Corresponding author for this work

9 Citations (Scopus)

Abstract

The ultraviolet absorption spectra and self reaction kinetics of CF₃CCI₂ and CF₃CCI₂O₂ radicals have been studied in the gas phase at 295K. Absorption cross sections were quantified over the wavelength range 220-300 nm. Measured cross sections near the absorption maxima were γ_CF3CCI2(230 nm) = (9.70 ± 1.47) x 10^-18 and γ_CF3CCI2O2(250 nm) = (1.70 ± 0.26) x 10^-18 cm² molecule^-1. Errors are statistical (2γ) together with our estimate of potential systematic errors. Rate constants for the self reaction of CF₃CCI₂ and CF₃CCI₂O₂ radicals were measured to be k₆ = (2.46 ± 0.43) x 10^-12 and k_7obs = (3.33 ± 0.53) x 10^-12 cm³ molecule^-1 s^-1, respectively. Results are discussed with respect to the existing database concerning halogenated peroxy radicals.

Original language	English
Journal	Research on Chemical Intermediates
Volume	20
Issue number	3-5
Pages (from-to)	265-276
Number of pages	12
ISSN	0922-6168
DOIs	https://doi.org/10.1163/156856794X00333
Publication status	Published - 1 Jan 1994

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@article{215d629ae7e44b6898f260a2ba85ffac,

title = "Pulse radiolysis study of CF3CCI2 and CF3CCI2O2 radicals in the gas phase at 295K",

abstract = "The ultraviolet absorption spectra and self reaction kinetics of CF3CCI2 and CF3CCI2O2 radicals have been studied in the gas phase at 295K. Absorption cross sections were quantified over the wavelength range 220-300 nm. Measured cross sections near the absorption maxima were γCF3CCI2(230 nm) = (9.70 ± 1.47) x 10-18 and γCF3CCI2O2(250 nm) = (1.70 ± 0.26) x 10-18 cm2 molecule-1. Errors are statistical (2γ) together with our estimate of potential systematic errors. Rate constants for the self reaction of CF3CCI2 and CF3CCI2O2 radicals were measured to be k6 = (2.46 ± 0.43) x 10-12 and k7obs = (3.33 ± 0.53) x 10-12 cm3 molecule-1 s-1, respectively. Results are discussed with respect to the existing database concerning halogenated peroxy radicals.",

author = "Wallington, {T. J.} and T. Ellermann and Nielsen, {OLE J.}",

year = "1994",

month = jan,

day = "1",

doi = "10.1163/156856794X00333",

language = "English",

volume = "20",

pages = "265--276",

journal = "Research on Chemical Intermediates",

issn = "0922-6168",

publisher = "Springer Netherlands",

number = "3-5",

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TY - JOUR

T1 - Pulse radiolysis study of CF3CCI2 and CF3CCI2O2 radicals in the gas phase at 295K

AU - Wallington, T. J.

AU - Ellermann, T.

AU - Nielsen, OLE J.

PY - 1994/1/1

Y1 - 1994/1/1

N2 - The ultraviolet absorption spectra and self reaction kinetics of CF3CCI2 and CF3CCI2O2 radicals have been studied in the gas phase at 295K. Absorption cross sections were quantified over the wavelength range 220-300 nm. Measured cross sections near the absorption maxima were γCF3CCI2(230 nm) = (9.70 ± 1.47) x 10-18 and γCF3CCI2O2(250 nm) = (1.70 ± 0.26) x 10-18 cm2 molecule-1. Errors are statistical (2γ) together with our estimate of potential systematic errors. Rate constants for the self reaction of CF3CCI2 and CF3CCI2O2 radicals were measured to be k6 = (2.46 ± 0.43) x 10-12 and k7obs = (3.33 ± 0.53) x 10-12 cm3 molecule-1 s-1, respectively. Results are discussed with respect to the existing database concerning halogenated peroxy radicals.

AB - The ultraviolet absorption spectra and self reaction kinetics of CF3CCI2 and CF3CCI2O2 radicals have been studied in the gas phase at 295K. Absorption cross sections were quantified over the wavelength range 220-300 nm. Measured cross sections near the absorption maxima were γCF3CCI2(230 nm) = (9.70 ± 1.47) x 10-18 and γCF3CCI2O2(250 nm) = (1.70 ± 0.26) x 10-18 cm2 molecule-1. Errors are statistical (2γ) together with our estimate of potential systematic errors. Rate constants for the self reaction of CF3CCI2 and CF3CCI2O2 radicals were measured to be k6 = (2.46 ± 0.43) x 10-12 and k7obs = (3.33 ± 0.53) x 10-12 cm3 molecule-1 s-1, respectively. Results are discussed with respect to the existing database concerning halogenated peroxy radicals.

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U2 - 10.1163/156856794X00333

DO - 10.1163/156856794X00333

M3 - Journal article

AN - SCOPUS:3943097508

SN - 0922-6168

VL - 20

SP - 265

EP - 276

JO - Research on Chemical Intermediates

JF - Research on Chemical Intermediates

IS - 3-5

ER -

Pulse radiolysis study of CF₃CCI₂ and CF₃CCI₂O₂ radicals in the gas phase at 295K

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