Kinetics of gas-phase reactions of cyc-CF2CF2CF2CHFCH2[sbnd] and trans-cyc-CF2CF2CF2CHFCHF[sbnd] with OH radicals between 253 and 328 K

Abstract

Rate constants for the reactions of cyc-CF2CF2CF2CHFCH2 (k1) and trans-cyc-CF2CF2CF2CHFCHF (k2) with OH radicals were assessed by a relative rate method. The values were determined as (9.35±5.83)×10−13exp[−(1197±180)/T] and (8.02±2.17)×10−13exp[−(1198±80)/T] between 253 and 328K; and (1.72±0.05)×10−14 and (1.43±0.03)×10−14cm3molecule−1s−1 at 298K, respectively. The atmospheric lifetimes were 2.8 and 3.2 years; the 100-year time horizon global warming potentials were estimated to be 211 and 241, respectively.