Atmospheric Chemistry ofn-CxF2x+1CHO (x= 1, 3, 4): Reaction with Cl Atoms, OH Radicals and IR Spectra of CxF2x+1C(O)O2NO2

Smog chamber/FTIR techniques were used to measure (Cl + n- C x F 2 x +1 CHO, x = 1, 3, 4) = (2.1 ± 0.5) × 10 -12 and k (OH + n- C x F 2 x +1 CHO, x = 1, 3, 4) = (6.5 ± 1.2) × 10 -13 cm 3 molecule -1 s -1 in 700 Torr of N 2, or air, at 296 ± 2 K. Cl-initiated oxidation of n- C x F 2 x +1 CHO in the presence of NO in air diluent gave COF 2 in molar yields of 91 ± 11%, x = 1; 273 ± 36%, x = 3; and 371 ± 44%, x = 4. Small quantities (molar yields ≤ 3%) of CF 3 ONO 2 and n- C x F 2 x +1 C(O)O 2 NO 2 were also observed. IR spectra of n- C x F 2 x +1 C(O)O 2 NO 2 ( x = 1, 3, 4) are reported. Results are discussed with respect to the atmospheric degradation of fluorinated aldehydes, C x F 2 x +1 CHO.