UV-visible spectrum of the phenyl radical and kinetics of its reaction with NO in the gas phase

T. J. Wallington; H. Egsgaard; O. J. Nielsen; J. Platz; J. Sehested; T. Stein

doi:10.1016/S0009-2614(98)00537-5

UV-visible spectrum of the phenyl radical and kinetics of its reaction with NO in the gas phase

T. J. Wallington^*, H. Egsgaard, O. J. Nielsen, J. Platz, J. Sehested, T. Stein

^*Corresponding author for this work

32 Citations (Scopus)

Abstract

Pulse radiolysis transient UV-visible absorption spectroscopy was used to study the UV-visible absorption spectrum (225-575 nm) of the phenyl radical, C₆H₅(·), and kinetics of its reaction with NO. Phenyl radicals have a strong broad featureless absorption in the region of 225-340 nm. In the presence of NO phenyl radicals are converted into nitrosobenzene. The phenyl radical spectrum was measured relative to that of nitrosobenzene. Based upon σ(C₆H₅NO)_{270 nm} = 3.82 × 10^-17 cm² molecule^-1 we derive an absorption cross-section for phenyl radicals at 250 nm, σ(C₆H₅(·))_{250 nm} = (2.75 ± 0.58) × 10^-17 cm² molecule^-1. At 295 K in 200-1000 mbar of Ar diluent k(C₆H₅(·) + NO) = (2.09 ± 0.15) × 10^-11 cm³ molecule^-1 s^-1.

Original language	English
Journal	Chemical Physics Letters
Volume	290
Issue number	4-6
Pages (from-to)	363-370
Number of pages	8
ISSN	0009-2614
DOIs	https://doi.org/10.1016/S0009-2614(98)00537-5
Publication status	Published - 1 Jan 1998

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title = "UV-visible spectrum of the phenyl radical and kinetics of its reaction with NO in the gas phase",

abstract = "Pulse radiolysis transient UV-visible absorption spectroscopy was used to study the UV-visible absorption spectrum (225-575 nm) of the phenyl radical, C6H5(·), and kinetics of its reaction with NO. Phenyl radicals have a strong broad featureless absorption in the region of 225-340 nm. In the presence of NO phenyl radicals are converted into nitrosobenzene. The phenyl radical spectrum was measured relative to that of nitrosobenzene. Based upon σ(C6H5NO)270 nm = 3.82 × 10-17 cm2 molecule-1 we derive an absorption cross-section for phenyl radicals at 250 nm, σ(C6H5(·))250 nm = (2.75 ± 0.58) × 10-17 cm2 molecule-1. At 295 K in 200-1000 mbar of Ar diluent k(C6H5(·) + NO) = (2.09 ± 0.15) × 10-11 cm3 molecule-1 s-1.",

author = "Wallington, {T. J.} and H. Egsgaard and Nielsen, {O. J.} and J. Platz and J. Sehested and T. Stein",

year = "1998",

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doi = "10.1016/S0009-2614(98)00537-5",

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TY - JOUR

T1 - UV-visible spectrum of the phenyl radical and kinetics of its reaction with NO in the gas phase

AU - Wallington, T. J.

AU - Egsgaard, H.

AU - Nielsen, O. J.

AU - Platz, J.

AU - Sehested, J.

AU - Stein, T.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - Pulse radiolysis transient UV-visible absorption spectroscopy was used to study the UV-visible absorption spectrum (225-575 nm) of the phenyl radical, C6H5(·), and kinetics of its reaction with NO. Phenyl radicals have a strong broad featureless absorption in the region of 225-340 nm. In the presence of NO phenyl radicals are converted into nitrosobenzene. The phenyl radical spectrum was measured relative to that of nitrosobenzene. Based upon σ(C6H5NO)270 nm = 3.82 × 10-17 cm2 molecule-1 we derive an absorption cross-section for phenyl radicals at 250 nm, σ(C6H5(·))250 nm = (2.75 ± 0.58) × 10-17 cm2 molecule-1. At 295 K in 200-1000 mbar of Ar diluent k(C6H5(·) + NO) = (2.09 ± 0.15) × 10-11 cm3 molecule-1 s-1.

AB - Pulse radiolysis transient UV-visible absorption spectroscopy was used to study the UV-visible absorption spectrum (225-575 nm) of the phenyl radical, C6H5(·), and kinetics of its reaction with NO. Phenyl radicals have a strong broad featureless absorption in the region of 225-340 nm. In the presence of NO phenyl radicals are converted into nitrosobenzene. The phenyl radical spectrum was measured relative to that of nitrosobenzene. Based upon σ(C6H5NO)270 nm = 3.82 × 10-17 cm2 molecule-1 we derive an absorption cross-section for phenyl radicals at 250 nm, σ(C6H5(·))250 nm = (2.75 ± 0.58) × 10-17 cm2 molecule-1. At 295 K in 200-1000 mbar of Ar diluent k(C6H5(·) + NO) = (2.09 ± 0.15) × 10-11 cm3 molecule-1 s-1.

UR - http://www.scopus.com/inward/record.url?scp=0000057128&partnerID=8YFLogxK

U2 - 10.1016/S0009-2614(98)00537-5

DO - 10.1016/S0009-2614(98)00537-5

M3 - Journal article

AN - SCOPUS:0000057128

SN - 0009-2614

VL - 290

SP - 363

EP - 370

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 4-6

ER -

UV-visible spectrum of the phenyl radical and kinetics of its reaction with NO in the gas phase

Abstract

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