Kinetic study of the Br+IO, I+BrO and Br+I-2 reactions. Heat of formation of the BrO radical

被引：48
|
作者：
Bedjanian, Y [1 ]
LeBras, G [1 ]
Poulet, G [1 ]
机构：
[1] UNIV ORLEANS,F-45071 ORLEANS 2,FRANCE
来源：
CHEMICAL PHYSICS LETTERS | 1997年 / 266卷 / 1-2期
关键词：
D O I：
10.1016/S0009-2614(97)01530-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Using the discharge-flow mass spectrometric method, the rate coefficients for the reactions Br + IO --> I + BrO (2), I + BrO --> Br + IO (3) and Br + I-2 --> I + IBr (4) have been measured at 298 K and 1 Torr: k(2) = (2.3 +/- 0.3) x 10(-11), k(3) = (1.45 +/- 0.20) X 10(-11) and k(4) = (1.20 +/- 0.15) X 10(-10) cm(3) molecule(-1) s(-1). The value of the enthalpy of BrO formation has been derived from the kinetic data obtained for reactions (2) and (3): Delta H-f,H-298(BrO) = 28.6 +/- 1.4 kcal mol(-1).
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页码：233 / 238
页数：6
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