Atmospheric chemistry of (Z)-CF2HCF=CHCl: Kinetics and products of reaction with Cl atoms and OH radicals

Long path length FTIR-smog chamber techniques were used to study the title reactions in 650 Torr of N-2, oxygen, or air diluent at 296 +/- 3 K. Values of k(Cl + (Z)-CF2HCF = CHCl)& boxH;(6.6 +/- 0.7) x 10(-11) and k(OH + (Z)-CF2HCF & boxH;CHCl)& boxH;(4.1 +/- 0.7) x 10(-12) cm(3) molecule(-1) s(-1) were measured. The IR spectrum of (Z)-CF2HCF & boxH;CHCl is reported. The atmospheric lifetime of (Z)-CF2HCF & boxH;CHCl is determined by the reaction with OH and is approximately 2.8 days. Reaction of (Z)-CF2HCF & boxH;CHCl with Cl atoms gives HC(O)Cl and CF2HC(O)F as major primary products. Under environmental conditions, the OH radical initiated oxidation gives CF2HC(O)F and HC(O)Cl in yields of (98 +/- 8)% and (100 +/- 4)%, respectively. Accounting for non-uniform horizontal and vertical mixing leads to a 100-year time-horizon global warming potential value for (Z)-CF2HCF & boxH;CHCl of essentially zero.