Synthesis and pyrolysis of perfluoroazo-2-propane

Article abstract of DOI:10.1002/kin.550260109

An improved method has been used to synthesize perfluoroazo-2-propane. Pyrolysis over the temperature range 450-514 K in a static system has been shown to be a homogeneous, first-order process. No pressure dependence was observed in the presence of excess inert gas (SF₆). The only products were nitrogen and perfluoro-2,3-dimethylbutane. The rate constant (k) for the decomposition process is given by: log(k/s^-1) = 16.7 ± 0.2 - (9856 ± 109)/T These results lead to a straightforward mechanism for the decomposition process (1) i-C₃F₇N₂ i-C₃F₇ → i-C₃F₇N₂ + i-C₃F₇ (2) i-C₃F₇N₂ → i-C₃F₇ + N₂ (3) 2i-C₃F₇ → (i-C₃F₇)₂ The results are compared with those for other azo compounds.