ISSN:
0538-8066
Keywords:
Chemistry
;
Physical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Using a pulse-radiolysis transient UV-VIS absorption system, rate constants for the reactions of F atoms with CH3CHO (1) and CH3CO radicals with O2 (2) and NO (3) at 295 K and 1000 mbar total pressure of SF6 was determined to be k1=(1.4±0.2)×10-10, k2=(4.4±0.7)×10-12, and k3=(2.4±0.7)×10-11 cm3 molecule-1 s-1. By monitoring the formation of CH3C(O)O2 radicals (λ〉250nm) and NO2 (λ=400.5nm) following radiolysis of SF6/CH3CHO/O2 and SF6/CH3CHO/O2/NO mixtures, respectively, it was deduced that reaction of F atoms with CH3CHO gives (65±9)% CH3CO and (35±9)% HC(O)CH2 radicals. Finally, the data obtained here suggest that decomposition of HC(O)CH2O radicals via C—C bond scission occurs at a rate of 〈4.7×105 s-1. © 1998 John Wiley & Sons, Inc. Int J Chem Kinet 30: 913-921, 1998
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
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