Atmospheric chemistry of C2F5CHO: reaction with Cl atoms and OH radicals, IR spectrum of C2F5C(O)O2NO2

Andersen MPS; Hurley MD; Wallington TJ; Ball JC; Martin JW; Ellis DA; Mabury SA; Nielsen OJ

Chemical Physics Letters, Vol.379, No.1-2, 28-36, 2003

DOI10.1016/j.cplett.2003.08.004 Export Citation

Atmospheric chemistry of C2F5CHO: reaction with Cl atoms and OH radicals, IR spectrum of C2F5C(O)O2NO2

Andersen MPS, Hurley MD, Wallington TJ, Ball JC, Martin JW, Ellis DA, Mabury SA, Nielsen OJ

Smog chamber/FTIR techniques were used to measure k(Cl + C2F5CHO) = (1. 96 +/- 0.28) X 10(-12) and k(OH + C2F5CHO) = (5.26 +/- 0.80) x 10(-13) cm(3) molecule(-1) s(-1) in 700 Torr of N-2 or air at 296 +/- 2 K. The C1 initiated oxidation Of C2F5CHO in the presence of NO in air diluent gave COF2, CF3ONO2, and C2F5C(O)O2NO2 in molar yields of 180 +/- 19%, 6.1 +/- 0.6%, and 1.0 +/- 0.3%, respectively. The IR spectrum for C2F5C(O)O2NO2 is reported. Results are discussed with respect to the potential for the atmospheric degradation of fluorinated aldehydes, CnF2n+1CHO, to contribute to the observed environmental burden of fluorinated carboxylic acids, CnF2n+1C(O)OH. (C) 2003 Elsevier B.V. All rights reserved.