KINETICS OF THE REACTION OF C6H5 WITH HBR

被引：44

作者：

LIN, MC

YU, T

机构：

[1] Department of Chemistry, Emory University, Atlanta, Georgia

来源：

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS | 1993年 / 25卷 / 10期

关键词：

D O I：

10.1002/kin.550251008

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：

The rate constant for the reaction of phenyl radical with hydrogen bromide has been measured with the cavity-ring-down method at six temperatures between 297 and 523 K. The Arrhenius expression for the H abstraction reaction can be effectively given by: k(phi) = 10(-10.39+/-0.10) exp[-(551 +/- 19)/T] cm3/s. The values of these parameters are similar to those for the H + HBr reaction, but are in sharp contrast to those for alkyl radical reactions. The gross difference between the alkyl radical reactions and the phenyl and H-atom reactions could be rationalized in terms of the inductive effects of these radicals as measured by Taft's sigma* (polar) constants. (C) 1993 John Wiley & Sons, Inc.

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页码：875 / 880

页数：6

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