ISSN:
0538-8066
Keywords:
Chemistry
;
Physical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Rate constants for the gas phase reCedex 2, Franceactions of O(3P) atoms with a series of symmetric aliphatic ethers have been determined using the flash photolysis resonance fluorescence technique over the temperature range 240-400 K. The Arrhenius parameters derived from these data are (in units of cm3 molecule -1 s-1): \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{rcl} {\rm dimethyl ether,}k &=& (5.39 \pm 1.94) \times 10^{ - 12} {\rm exp[(} - {\rm 1320} \pm 120)/T]; \\ {\rm diethyl ether,}k &=& (1.42 \pm 0.18) \times 10^{ - 11} {\rm exp[(} - {\rm 1070} \pm 40)/T]; \\ {\rm di -}n{\rm - propyle ether,}k &=& (1.41 \pm 0.21) \times 10^{ - 11} {\rm exp[(} - {\rm 960} \pm 50)/T]; \\ {\rm di -}n{\rm - butyl ether,}k &=& (1.37 \pm 0.29) \times 10^{ - 11} {\rm exp[(} - {\rm 880} \pm 70)/T]; \\ {\rm di -}n{\rm - pentyl ether,}k &=& (1.26 \pm 0.84) \times 10^{ - 11} {\rm exp[(} - {\rm 780} \pm 200)/T]; \\ \end{array} $$\end{document}The error limits are two standard deviations derived from the least-squares fit. Rate constants for several other ethers were determined only at 298 K. The values obtained were (in units of 10-14 cm3 molecule-1 s-1): tetrahydrofuran (37.5 ± 1.1); 1,4-dioxane 1(6.81 ± 0.46); diethoxymethane (40.4 ± 1.8); ethyl -t-butyl ether (37.0 ± 1.3); and methyl-t-amylether (57.3 ± 2.3).
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/kin.550220707
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