𝔖 Bobbio Scriptorium
✦   LIBER   ✦

UV spectra and kinetics of radicals produced in the gas phase reactions of Cl, F and OH with toluene

✍ Scribed by Frank Markert; Palle Pagsberg

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
870 KB
Volume
209
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis

The gas phase reactions of Cl, F and OH with toluene have been studied by pulse radiolysis combined with time-resolved UV spectroscopy. The formation of benzyl radicals via the abstraction reactions CsH5-CH, + X-rCaHs-CHs t HX was observed with X=CI, F and OH. In the reaction with chlorine atoms the benzyl radical was the only reaction product observed. The addition reactions Y +C6H5-CHs+Y-C6H5-CH3 were observed with Y =F and OH, and the ultraviolet absorption spectra of the shortlived adducts have been recorded. Rate constants for the abstraction and addition reactions were derived from the observed formation kinetics and the relative yields ofbenzyl radicals and radical adducts, respectively. For the reaction of OH with toluene we have determined an overall rate constant for the addition and abstraction channels of k= (6.4 ? 0.7) x IO-'s cm3 molecule-' s-' and a branching ratio of 0.89 for the addition channel at 338 K.

📜 SIMILAR VOLUMES

Kinetics of the gas phase reaction of OH
Kinetics of the gas phase reaction of OH radicals with pyrrole and thiophene
✍ Timothy J. Wallington 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 443 KB 👁 2 views

Absolute rate constants for the gas phase reaction of OH radicals with pyrrole tk,) and thiophene ( k , ) have been measured over the temperature ranges 298-440 and 274-382 K, respectively, using the flash photolysis-resonance fluorescence technique. The rate constants obtained were independent of t

Kinetics of the reactions of pinonaldehy
Kinetics of the reactions of pinonaldehyde with OH radicals and with Cl atoms
✍ Barbara Nozière; Markus Spittler; Lars Ruppert; Ian Barnes; Karl H. Becker; Manu 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 193 KB 👁 2 views

The rate constant for the reaction of OH radicals with pinonaldehyde has been measured at 293 Ϯ 6 K using the relative rate method in the laboratory in Wuppertal (Germany) using photolytic sources for the production of OH radicals and in the EUPHORE smog chamber facility in Valencia (Spain) using th

Kinetics of the gas-phase reactions of c
Kinetics of the gas-phase reactions of cyclo-CF2CFXCHXCHX – (X = H, F, Cl) with OH radicals at 253–328 K
✍ L. Chen; T. Uchimaru; J. Mizukado; S. Kutsuna; K. Tokuhashi; A. Sekiya 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 299 KB 👁 2 views

## Abstract Rate constants were determined for the reactions of OH radicals with halogenated cyclobutanes cyclo‐CF~2~CF~2~CHFCH~2~(__k__~1~), __trans__‐cyclo‐CF~2~CF~2~CHClCHF(__k__~2~), cyclo‐CF~2~CFClCH~2~CH~2~(__k__~3~), __trans__‐cyclo‐CF~2~CFClCHClCH~2~(__k__~4~), and __cis__‐cyclo‐CF~2~CF

Kinetic and product study of the gas-pha
Kinetic and product study of the gas-phase reaction of sabinaketone with OH radical
✍ Nathalie Carrasco; Benedicte Picquet-Varrault; Jean-François Doussin 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 259 KB 👁 2 views

## Abstract Sabinaketone is one major photooxidation product of sabinene, an important biogenic volatile organic compound. This article provides the first product study and the second rate constant determination of its reaction with OH radicals. Experiments were investigated under controlled condit

Kinetics of the gas-phase reactions of O
Kinetics of the gas-phase reactions of OH radicals with a series of trimethylphenols
✍ Iustinian Bejan; Anna Schürmann; Ian Barnes; Thorsten Benter 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 399 KB 👁 2 views

## Abstract The kinetics of the reactions of hydroxyl (OH) radicals with 2,3,5‐trimethylphenol (235TMP), 2,3,6‐trimethylphenol (236TMP), 2,4,5‐trimethylphenol (245TMP), 2,4,6‐trimethylphenol (246TMP), and 3,4,5‐trimethylphenol (345TMP) have been investigated at 298 ± 2 K and atmospheric pressure of

The UV absorption spectra and kinetics o
The UV absorption spectra and kinetics of the self reactions of CH2ClO2 and CH2FO2 radicals in the gas phase
✍ Philippe Dagaut; Timothy J. Wallington; Michael J. Kurylo 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 English ⚖ 583 KB

The ultraviolet absorption spectra of chloromethylperoxy and fluoromethylperoxy radicals, CH2C10z and CH2F02, and the kinetics of their respective self reactions have been studied in the gas phase using a flash photolysis technique. The absorption spectra for both radicals were quantified over the w