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Pyrolysis of 4,4-bisperfluoromethylbutene-1,4 01 in the gas phase

✍ Scribed by Alvin S. Gordon

Publisher
John Wiley and Sons
Year
1972
Tongue
English
Weight
209 KB
Volume
4
Category
Article
ISSN
0538-8066

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✦ Synopsis

Pyrolysis of (CF3)2C(OH)CH2CH=CH2, the reverse of the reaction between perfluoroacetone and propene, has been studied in the gas phase between 475" and 598'K. Even at 573"K, the unimolecular reaction rate constant appears to be in its pressure-independent region at 20.0 torr pressure.

The specific unimolecular rate constant is In a quartz vessel, the decomposition is homogeneous.

where the limits are for one standard deviation. viously reported results on the reverse reaction, the equilibrium constant for the reaction Combining these results with the pre-

It is noteworthy that in the temperature range of the study of the forward reaction (448" to 573"K), the percentage of back reaction in the times of the experiments varies from less than 0.1 to 1.5. Using group additivities and the above AHO, aHro of (CFa)&O is calculated to be -325.2 kcal/mole at 600Β°K and the average C-C bond is 42.0 kcal/mole.

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