126266-75-9Relevant articles and documents
Atmospheric chemistry of t-CF3CHCHCl: Products and mechanisms of the gas-phase reactions with chlorine atoms and hydroxyl radicals
Andersen, M. P. Sulbaek,Nielsen,Hurley,Wallington
experimental part, p. 1735 - 1748 (2012/04/23)
FTIR-smog chamber techniques were used to study the products and mechanisms of the Cl atom and OH radical initiated oxidation of trans-3,3,3-trifluoro-1- chloro-propene, t-CF3CHCHCl, in 700 Torr of air or N 2/O2 diluent at 296 ± 2 K. The reactions of Cl atoms and OH radicals with t-CF3CHCHCl occur via addition to the CC double bond; chlorine atoms add 15 ± 5% at the terminal carbon and 85 ± 5% at the central carbon, OH radicals add approximately 40% at the terminal carbon and 60% at the central carbon. The major products in the Cl atom initiated oxidation of t-CF3CHCHCl were CF3CHClCHO and CF3C(O)CHCl2, minor products were CF3CHO, HCOCl and CF3COCl. The yields of CF3C(O)CHCl2, CF3CHClCOCl and CF3COCl increased at the expense of CF3CHO, HCOCl and CF3CHClCHO as the O2 partial pressure was increased over the range 10-700 Torr. Chemical activation plays a significant role in the fate of CF3CH(O)CHCl2 and CF 3CClHCHClO radicals. In addition to reaction with O2 to yield CF3COCl and HO2 the major competing fate of CF 3CHClO is Cl elimination to give CF3CHO (not C-C bond scission as previously thought). As part of this study k(Cl + CF 3C(O)CHCl2) = (2.3 ± 0.3) × 10-14 and k(Cl + CF3CHClCHO) = (7.5 ± 2.0) × 10-12 cm3 molecule-1 s-1 were determined using relative rate techniques. Reaction with OH radicals is the major atmospheric sink for t-CF3CHCHCl. Chlorine atom elimination giving the enol CF3CHCHOH appears to be the sole atmospheric fate of the CF 3CHCHClOH radicals. The yield of CF3COOH in the atmospheric oxidation of t-CF3CHCHCl will be negligible (3CHCHCl. the Owner Societies 2012.
POLYFLUORINATED AL-ENOLATES
Zeifman, Yu. V.,Postovoi, S. A.,Vol'pin, I. M.,German, L. S.
, p. 241 - 245 (2007/10/02)
-
