OH radical reaction rate constants for polycyclic alkanes: Effects of ring strain and consequences for estimation methods
β Scribed by Roger Atkinson; Sara M. Aschmann
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 364 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0538-8066
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β¦ Synopsis
Abstract
Using a relative rate method, rate constants for the gasβphase reactions of the OH radical with transβpinane [(1R, 2R)β2, 6, 6βtrimethylbicyclo[3.1.1]heptane], tricyclene (1, 7, 7βtrimethyltricyclo[2.2.1.0^2, 6^]heptane), and quadricyclane (quadricyclo[2.2.1.0^2, 6^.0^3, 5^]heptane) of (1.34 Β± 0.29) Γ 10^β11^ cm^3^ molecule^β1^ s^β1^, (2.86 Β± 0.62) Γ 10^β12^ cm^3^ molecule^β1^ s^β1^ and (1.83 Β± 0.41) Γ 10^β12^ cm^3^ molecule^β1^ s^β1^, respectively, have been determined at 296 Β± 2 K. These rate constants are compared with values calculated from an empirical estimation method and used to refine this estimation technique for the calculation of OH radical reaction rate constants for polycyclic systems. Β© John Wiley & Sons, Inc.
π SIMILAR VOLUMES
Relative rate constants for the gas-phase reactions of OH radicals with a series of bi-and tricyclic alkanes have been determined at 299 f 2 K, using methyl nitrite photolysis in air as a source of OH radicals. Using a rate constant for the reaction of OH radicals with cyclohexane of 7.57 X cm3/mole
## Abstract Using methyl nitrite photolysis in air as a source of hydroxyl radicals, relative rate constants for the reaction of OH radicals with a series of alkanes and alkenes have been determined at 299 Β± 2 K. The rate constant ratios obtained are: relative to __n__βhexane = 1.00, neopentane 0.1
## Abstract Density functional theory was used to estimate the lifetime of fluorinated formates, which are primary products from the oxidation of hydrofluoroethers. First, the Cο£ΏH bond dissociation enthalpies (BDEs) of 10 fluorinated formates, C~__n__~F~2__n__ + 1~OC(O)H (__n__ = 1β4) and C~__n__~H