Kinetics of the shock-initiated decomposition of 1,1-difluoroethylene

The decomposition of 1,1-difluoroethylene has been studied in a single-pulse shock tube over the temperature range of 1290 to 1700°K at total reflected shock pressures of about 3 to 4 kTorr and reaction dwell times of about 10^-a sec. At low conversions, below 1480°K, the principal reaction is the unimolecular elimination of HF with the first-order rate constant given by k = 10^14.4±1.1 exp[-(86,000 ± 6800)/RT] sec^-1. At temperatures in excess of 1500°K, corresponding to extents of reaction greater than 5%, the mechanism becomes very complex with over 18 products being observed.