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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 2, Number 4
April 20, 1981 

Kinetics of the Bromine-Exchange Reaction of Gallium Bromide with i-Buthyl Bromide in 1, 2, 4-Trichlorobenzene and in Nitrobenzene
Oh Cheun Kwun, Young Cheul Kim, Sang Up Choi
The rate of the bromine-exchange reaction between gallium bromide and i-butyl bromide in 1,2,4-trichlorobenzene or nitrobenzene was measured at 19, 25 and 40℃, using i-butyl bromide labelled with Br-82. The results indicated that the exchange reaction was second order with respect to gallium bromide and first order with respect to i-butyl bromide. The third-order rate constant determined at 19℃ was 3.28 × 10-2 l2· mole-2·sec-1 in 1,2,4-trichlorobenzene and 9.25 × 10-3 l2·mole-2·sec-1 in nitrobenzene. The activation energy, the enthalpy of activation and the entropy of activation for the exchange reaction were also determined.
138 - 141
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