Pyrolysis kinetics of ethyl fluoroacetate in the gas phase

The kinetics of the gas phase pyrolysis of ethyl fluoroacetate have been measured over the temperature range of 340–365 °C and pressure range of 66–187 Torr. The reaction, in a static system seasoned with allyl bromide, and in the presence or absence of propene inhibitor, is homogeneous, unimolecular, and obeys a first-order rate law. The temperature dependence of the rate coefficients is given by the following Arrhenius equation: log k₁ (sec^–1)=(12.57±0.26)–(194.0±3.1 kJ/mol)/2.303 RT. The result of this work confirms that the sequence of the -halo substituent effects follows the order of their electronegativity differences.

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340–365 °C 66–187 . , , , , . ; log k₁ (cek^–1)=(12,57±0,26) –(194,0±3,1) //2,303RT. - .