Journal of Physical Chemistry, Vol.99, No.38, 13917-13920, 1995
Photolysis of Fluorine Molecules Trapped in Solid Methane at 15 K - Evidence of the Reaction of Vibrationally Excited CH3F Molecules with F2
The kinetics of reactions initiated via F-2 photolysis in solid methane at 15 K was studied with IR spectroscopy. CH3F ... HF complexes, formed in a cage reaction with a quantum yield of 0.55 +/- 0.10, are the main products of the photolysis at a host:guest matrix ratio M/R > 5. At M/R < 100 the formation of CH2F2 is also detected. Its quantum yield grows linearly with F-2 concentration in the MIR range 100-13. The formation of CH2F2 is suggested to be due to the reaction of the F-2 molecule with a highly vibrationally excited primary product CH3F*, formed upon photolysis of the reactant clusters (F-2 . CH4 . F-2).