THERMAL-DECOMPOSITION OF TERT-BUTYL BROMIDE AND TERT-BUTYL IODIDE IN SHOCK-WAVES

被引：5
|
作者：
HIPPLER, H
RIEDL, A
TROE, J
WILLNER, J
机构：
[1] Institut für physikalische Chemie der Universitát Göttingen, Tammannstrasse 6
来源：
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 1991年 / 171卷
关键词：
T-BUTYLHALIDES; THERMAL DECOMPOSITION; SHOCK WAVES; HYDROGEN HALIDE ELIMINATION;
D O I：
10.1524/zpch.1991.171.Part_2.161
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 thermal decomposition reactions of t-butyl bromide and t-butyl iodide were studied in shock waves in the temperature range 760-1050 K using UV absorption spectroscopy. Both molecules eliminate hydrogen halide in a unimolecular fourcenter reaction t-C4H9Br --> i-C4H8 + HBr (1a) t-C4H9I --> i-C4H8 + HI. (1b) Combination of the measured rate constants with earlier low temperature results leads to the expressions k(1a) = 10(14.4 +/- 0.2)exp[-(180 +/- 3) kJ mol-1/RT]s-1 (between 505 K and 1050 K) and k(1b) = 10(13.9 +/- 0.2)exp[-(164 +/- 3) kJ mol-1/RT]s-1 (between 465 K and 1020 K).
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页码：161 / 177
页数：17
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