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1718259 
Journal Article 
A kinetics study on reactions of C6H5O with C6H5O and O-3 at 298 K 
Tao, ZN; Li, ZJ 
1999 
Yes 
International Journal of Chemical Kinetics
ISSN: 0538-8066
EISSN: 1097-4601 
31 
1 
65-72 
WOS:000077719300008 
Kinetics for reactions of phenoxy radical, C6H5O, with itself and with O-3 were examined at 298 K and low pressure (1 Torr) using discharge flow coupled with mass spectrometry (DF/MS). The rate constant for the phenoxy radical self-reaction was determined to be K-1 = (1.49 +/- 0.53) x 10(-11) cm(3) molecule(-1) s(-1) defined by d[C6H5O]/dt = -2 k(1)[C6H5O](2). The rate constant for the C6H5O reaction with O-3 was measured to be k(2) = (2.86 +/- 0.35) x 10(-13) cm(3) molecule(-1) s(-1), which may be a lower limit value. Because of much higher atmospheric abundance of ozone than that of both NO and phenoxy, the reaction of C6H5O with ozone may represent the principal fate of the phenoxy radical in the atmosphere. Products from reaction of C6H5O + C6H5O, NO, and NO2 were also investigated, and (C6H5O)(2) (m/e = 186), C6H5O(NO) (m/e = 123), and C6H5O(NO2) (m/e = 139) adducts were observed as products for the reactions of C6H5O with itself, NO, and NO2, respectively. (C) 1999 John Wiley & Sons, Inc.