## Abstract Rate constants for the gas‐phase reactions of CH~3~OCH~2~CF~3~ (__k__~1~), CH~3~OCH~3~ (__k__~2~), CH~3~OCH~2~CH~3~ (__k__~3~), and CH~3~CH~2~OCH~2~CH~3~ (__k__~4~) with NO~3~ radicals were determined by means of a relative rate method at 298 K. NO~3~ radicals were prepared by thermal d
Rate constants for the reaction of O(3P) atoms with CH2 = CHF, CH2 = CHCl, and CH2 = CHBr at 298 ± 2°K
✍ Scribed by R. Atkinson; J. N. Pitts JR.
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- English
- Weight
- 298 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
Absolute rate constants for the reaction of O(3P) atoms with CHI = CHF, CH2 = CHC1, and CH2 = CHBr have been obtained at 298 f 2°K using a modulation phase shift technique. The rate constants ( k z X lo-* l./mole.sec) obtained are: CH2 = CHF (1.61 =t 0.20), CH2 = CHCl (2.54 + 0.26), and CHZ = CHBr (2.45 rt 0.25).
These rate constants are lower than those determined by discharge flow techniques, but that for CHz = CHF is in good agreement with relative rate measurements.
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A low-pressure discharge-flow system equipped with laser-induced fluorescence (LIF) detection of NO 2 and resonance-fluorescence detection of OH has been employed to study the self reactions CH 2 ClO 2 ϩ CH 2 ClO 2 : products (1) and CHCl 2 O 2 ϩ CHCl 2 O 2 : products (2), at T ϭ 298 K and P ϭ 1-3 T
## Abstract Pulse radiolysis techniques were used to measure the gas phase UV absorption spectra of the title peroxy radicals over the range 215–340 nm. By scaling to σ(CH~3~O~2~)~240 nm~ = (4.24 ± 0.27) × 10^−18^, the following absorption cross sections were determined: σ(HO~2~)~240 nm~ = 1.29 ± 0
The rate constants for the reactions of OH radicals with CH 3 OCF 2 CF 3 , CH 3 OCF 2 CF 2 CF 3 , and CH 3 OCF(CF 3 ) 2 have been measured over the temperature range 250-430 K. Kinetic measurements have been carried out using the flash photolysis, laser photolysis, and discharge flow methods combine
## Abstract The fast flow method with laser induced fluorescence detection of CH~3~C(O)CH~2~ was employed to obtain the rate constant of __k__~1~ (298 K) = (1.83 ± 0.12 (1σ)) × 10^10^ cm^3^ mol^−1^ s^−1^ for the reaction CH~3~C(O)CH~2~ + HBr ↔ CH~3~C(O)CH~3~ + Br (1, −1). The observed reduced react