Quantum Mechanical Study of the Kinetics, Mechanisms and Thermodynamics of the Gas-Phase Pyrolysis of Isopropyl Bromide
Abstract
Computational studies of the kinetics, mechanisms and thermodynamics of the gas-phase pyrolysis of isopropyl bromide at 623K was studied using PM3 in the semi-empirical and DFT with B3LYP at 6-31G* level methods of calculation. The reaction proved to be a unimolecular reaction and followed a first order rate equation. The calculation showed that the pyrolysis of isopropyl bromide proceeds through a four-membered cyclic transition state which involved a C8-H11 and C4-Br6 bond breaking and H11-Br6 bond making. The Arrhenius parameters, log A (13.6 and 13.8) obtained for both methods are in good agreement with experimental result (13.6).
Keywords: semi-empirical, isopropyl bromide, gas-phase, kinetics.
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ISSN (Paper)2224-3224 ISSN (Online)2225-0956
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