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The reaction of 2,5‐dimethylpyrrole with O 2 ( a 1 Δ g ) in the gas phase
Author(s) -
Fiedler E.,
Hack W.
Publication year - 1991
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550231007
Subject(s) - chemistry , isothermal process , reaction rate constant , analytical chemistry (journal) , mass spectrometry , quenching (fluorescence) , gas phase , chemical reaction , reaction mechanism , reaction rate , thermodynamics , organic chemistry , kinetics , chromatography , fluorescence , catalysis , physics , quantum mechanics
The chemical reaction of 2,5‐dimethylpyrrole (C 6 H 9 N) with O 2 ( 1 Δ g )was studied in the gas phase in an isothermal flow reactor at room temperature and low pressures. The C 6 H 9 N concentration profiles were studied under pseudo‐first order conditions [C 6 H 9 N] ∘ ≪ [O 2 ( 1 Δ g )] with mass‐spectrometric detection of C 6 H 9 N. O 2 ( 1 Δ g ) was produced either in a microwave discharge or in a chemical reaction. The value for the rate constant:\documentclass{article}\pagestyle{empty}\begin{document}$$ k_{1c} (298{\rm K)} = (1.0 \pm 0.3)10^{11} {\rm cm}^{\rm 3} \cdot {\rm mol}^{ - {\rm 1}} \cdot {\rm s}^{ - {\rm 1}} $$\end{document}was measured. The rate constant is compared to the value obtained for the quenching process. The primary product C 6 H 9 NO 2 was detected by mass spectrometry and the reaction mechanism is proposed. The possibility of using this reaction as a gas phase titration reaction for O 2 ( 1 Δ g ) is discussed.