3369-48-0Relevant articles and documents
Atmospheric Chemistry of HFC-227ca: Spectrokinetic Investigation of the CF3CF2CF2O2 Radical, Its Reactions with NO and NO2, and the Atmospheric Fate of the CF3CF2CF2O Radical
Giessing, Anders M. B.,Feilberg, Anders,Moegelberg, Trine E.,Sehested, Jens,Bilde, Merete,et al.
, p. 6572 - 6579 (2007/10/03)
A pulse radiolysis technique was used to study the UV absorption spectrum of CF3CF2CF2O2 radicals, at 230 nm ? = (3.2 +/- 0.4)E-18 cm2 molecule-1.Rate constants for reactions of CF3CF2CF2O2 radicals with NO and NO2 were k3 > 7E-12 cm3 molecule-1 s-1 and k4 = (7.6 +/- 2.4)E-12 cm3 molecule-1 s-1, respectively.The rate constant for reaction of F atoms with CF3CF2CF2H was determined by using an absolute rate technique to be (3.6 +/- 1.3)E-13 cm3 molecule-1 s-1.The atmospheric fate of CF3CF2CF2O radicals is decomposition via C-C bond scission to give CF3CF2 radicals and CF2O.In one bar of SF6 at 296 K, CF3CF2CF2O radicals decompose with a rate > 1.5E5 s-1.In their turn CF3CF2 radicals are converted into CF3CF2O radicals which also decompose via C-C bond scission.As part of this work a relative rate method was used to measure k(Cl + CF3CF2CF2H) = (3.4 +/- 0.7)E-16 and k(F + CF3CF2CF2H) = (3.2 +/- 0.8)E-13 cm3 molecule-1 s-1.The results are discussed with respect to the atmospheric chemistry of HFC-227ca.
