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RATE CONSTANTS FOR THE REACTIONS OF OH RADICALS AND CL ATOMS WITH DI-N-PROPYL ETHER AND DI-N-BUTYL ETHER AND THEIR DEUTERATED ANALOGS. (R825252)
Citation:
Harry, C., R. Atkinson, AND J. Arey. RATE CONSTANTS FOR THE REACTIONS OF OH RADICALS AND CL ATOMS WITH DI-N-PROPYL ETHER AND DI-N-BUTYL ETHER AND THEIR DEUTERATED ANALOGS. (R825252). International Journal of Chemical Kinetics. John Wiley and Sons Ltd, New York, 31:425-431, (1999).
Description:
Using relative rate methods, rate constants for the gas-phase reactions of OH radicals and Cl atoms with di-n-propyl ether, di-n-propyl ether-d14, di-n-butyl ether and di-n-butyl ether-d18 have been measured at 296 ? 2 K and atmospheric pressure of air. The rate constants obtained (in cm3 molecule-1 s-1 units) were: OH radical reactions, di-n-propyl ether, (2.18 ? 0.17) ? 10-11; di-n-propyl ether-d14, (1.13 ? 0.06) ? 10-11; di-n-butyl ether, (3.30 ? 0.25) ? 10-11; and di-n-butyl ether-d18, (1.49 ? 0.12) ? 10-11; Cl atom reactions, di-n-propyl ether, (3.83 ? 0.05) ? 10-10; di-n-propyl ether-d14, (2.84 ? 0.31) ? 10-10; di-n-butyl ether, (5.15 ? 0.05) ? 10-10; and di-n-butyl ether-d18, (4.03 ? 0.06) ? 10-10. The rate constants for the di-n-propyl ether and di-n-butyl ether reactions are in agreement with literature data, and the deuterium isotope effects are consistent with H-atom abstraction being the rate-determining steps for both the OH radical and Cl atom reactions.