The temperature dependence of the rate constant for the reaction F+C 2H6 has been determined by a competitive method using the F+CH4 reaction as a reference reaction. Ratios of rate constants kF+C2H6/kF+CH4 were determined by a discharge-flow-mass spectrometric technique at four temperatures in the range 189-298 K. These ratios were combined with values of kF+CH4 from an earlier study to obtain absolute values for kF+C2H6. The Arrhenius expression calculated from the results is kF+C2H6=(1.95±0.25)× 10-10exp[-(180±70)/T] cm3 molecule-1 s-1. The present results are compared with previous published results.
|Number of pages||6|
|Journal||Chemical Physics Letters|
|State||Published - 21 Oct 2003|