Fourier transform microwave spectroscopy of Criegee intermediates: The conformational behaviour of butyraldehyde oxide

Carlos Cabezas, Jean-Claude Guillemin, Yasuki Endo*

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

Four conformers of the n-propyl-substituted Criegee intermediate, CH3CH2CH2CHOO, also named n-butyraldehyde oxide, have been observed by Fourier transform microwave spectroscopy. The transient species was produced using a pulsed electric discharge of a gas mixture of 1,1-diiodobutane/O-2 diluted in Ar or Ne. The observation of only syn species is in contrast to the results of other previous studies of alkyl-substituted Criegee intermediates, in particular, those for the structural isomers, isobutyraldehyde oxide ((CH3)(2)CHCHOO), and methyl-ethyl-ketone oxide (C2H5C(CH3)OO), for which syn and anti species have been observed coexisting in the gas phase.

Original languageEnglish
Article number104301
Number of pages6
JournalJournal of Chemical Physics
Volume150
Issue number10
DOIs
StatePublished - 14 Mar 2019

Keywords

  • CONFORMER-DEPENDENT REACTIVITY
  • VOLATILE ORGANIC-COMPOUNDS
  • UV ABSORPTION-SPECTRUM
  • TROPOSPHERIC CHEMISTRY
  • CH2OO
  • OZONOLYSIS
  • KINETICS

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