L. Cafferata, C. W. Jefford, R. Rimada
2002
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0
Influential Citations
1
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Journal
Afinidad
Abstract
The kinetics of the thermal decomposition reactions of two fluorine substituted 1,2,4-trioxanes: cis-6-(4-fluorophenyl)-5,6-[2-(4-fluorophenyl]-propyliden-3,3-tetra-methylene 1,2,4-trioxacyclohexane (I) and cis-6-(4-fluorophenyl)-5,6-[2- (4-fluorophenyl)] -3-hydroxypropiliden-3,3 -tetramethylene-1,2,4-trioxacyclohexane (11), were investigated in n-hexane solutions in the temperatures and concentrations ranges of 393.2 - 453.2 K and (13.5 - 263) x 10 - 5 M, respectively. First-order rate constants were obtained up to 93-94% conversions of those cyclic peroxides. The corresponding values of the activation parameters for the initial unimolecular homolysis of their molecules, together with the products analyses of the reaction support stepwise mechanisms of thermolysis. However, similar reaction pathways can be postulated for both reactions with different ground or transition states for the corresponding peroxydic bond ruptures.