HF infrared chemiluminescence in the reactions of fluorine atoms with cis‐Butene‐2, trans‐butene‐2 and 2,3‐d₂‐butene‐2

Abstract

For the reactions F+cis‐butene‐2 and F+trans‐butene‐2 identical vibrational distributions for the product molecule HF were determined: Nv=1 : Nv=2: Nv=3: Nv=4 = 0.26:0.33:0.26:0.15. Two reaction channels for each compound are responsible for this distribution. Isolated reaction channels were observed in the reaction system F+2,3‐d2‐butene‐2. The determined distributions for the latter reactions were N v=1, CH 3: N v=2, CH 3: N v=3, CH 3: N v=4, CH 3 = 0.26:0.26:0.31:0.17 for HF and Nv=1, CD: Nv=2, CD: Nv=3, CD: Nv=4, CD = 0.23:0.38:0.31:0.08 for DF. For the latter system also rotational distributions are documented which indicate several microscopic channels. The comparison of F+d2‐butene‐2 with other F+RH reactions (RH = saturated hydrocarbon) shows a decrease in vibrational inversion due to the presence of a II‐bond system.

H Abstraction Channels in the Crossed-Beam Reaction of F + 1-Propanol, 1-Butene and 1-Hexene by DC Slice Imaging

“…There are also various other experimental and theoretical studies for fluorine atom reactions with small alkenes − but few results have been reported for C 4 or larger linear alkenes. Similarly, detailed experimental investigations on the kinetics of F + CH 3 OH and ethanol, propanol reactions have been reported while little dynamical information is available for larger alcohols.…”