The reflected shock tube technique with multipass absorption spectrometric detection (at a total path length of similar to 1.75 m) of OH-radicals at 308 nm has been used to study the dissociation of CF3-radicals [CF3 + Kr -> CF2 + F + Kr (a)] between 1803 and 2204 K at three pressures between similar to 230 and 680 Torr. The OH-radical concentration buildup resulted from the fast reaction F + H2O -> OH + HF (b). Hence, OH is a marker for F-atoms. To extract rate constants for reaction (a), the [OH] profiles were modeled with a chemical mechanism. The initial rise in [OH] was mostly sensitive to reactions (a) and (b), but the long time values were additionally affected by CF2 + OH -> CF2O + H (c). Over the experimental temperature range, rate constants for (a) and (c) were. determined from the mechanistic fits to be k(CF3+Kr) = 4.61 x 10(-9) exp(-30020 K/T) and k(CF2+OH) = (1.6 +/-0.6) x 10(-10), both in units of cml molecule(-1) s(-1). Reaction (a), its reverse recombination reaction reaction (-a), and reaction (c) are also studied theoretically. Reactions (c) and (-a) are studied with direct CASPT2 variable reaction coordinate transition state theory. A master equation analysis for reaction (a) incorporating the ab initio determined reactive flux for reaction (-a) suggests that this reaction is close to but not quite in the low-pressure limit for the pressures studied experimentally. In contrast, reaction (c) is predicted to be in the high-pressure limit due to the high exothermicity of the products. A comparison with past and present experimental results demonstrates good agreement between the theoretical predictions and the present data for both (a) and (c).