The kinetics of dissociation and isomerisation of hexafluoro-1,2-bistrifluoromethylcyclobutane

Abstract

The thermal reactions of cis- and trans-hexafluoro-1,2-bistrifluoromethylcyclobutane have been studied at 410–500° and 25–125 mm. pressure. Dissociation to perfluoropropene and isomerization take place at similar rates. The rates of reactions can be expressed by the following equations: cis-1,2-(CF₃)₂C₄F₆→ 2C₃F₆, k= 1·18 × 10¹⁵ exp(–64,200/RT) sec.^–1., trans-1,2-(CF₃)₂C₄F₆→ 2C₃F₆, k= 4·30 × 10¹⁵ exp(–64,200/RT) sec.^–1., cis-1,2-(CF₃)₂C₄F₆→trans-1,2-(CF₃)₂C₄F₆, k= 2·31 × 10¹⁵ exp(–64,200 RT) sec.^–1., trans-1,2-(CF₃)₂C₄F₆→cis-1,2-(CF₃)₂C₄F₆, k= 5·84 × 10¹⁵ exp(–64,200/RT) sec.^–1.