Study on the Reaction Intermediates of Laser Induced Photooxidation of CF₃I in Ar Matrix

Pulsed 266nm laser induced reaction of CF₃I with O₂ in Ar matrix has been studied by FTIR spectroscopy.Verification of the participation of CF₃OOI as a reaction intermediate has been made for the first time in CF₃I/O₂ system.Equilibrium geometry,harmonic frequencies and their relative intensities have been calculated by ab initio calculation at the level of HF/LANLIDZ.Calculation results are in good agreement with experimental observations.Growth and decay of the IR absorption of CF₃OO,CF₃OOI,CF₃O and CF₃OI have been observed in the irradiation process,and provided experimental evidence for the reaction intermediates.A photooxidetion mechanism is proposed.