The reactivity of the Criegee intermediate CH3CHOO with water probed by FTMW spectroscopy

Carlos Cabezas, Yasuki Endo*

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

The reaction of Criegee intermediates with water is one of the dominant removal mechanisms for these species in the atmosphere. The reactivity of alkyl substituted Criegee intermediates has been shown to be affected by the nature and location of the substituents. CH3CHOO, acetaldehyde oxide, can be considered as a prototypical Criegee intermediate with a single alkyl substituent to examine the conformer specific reactivity for Criegee intermediates. Pulsed Fourier-transform microwave spectroscopy has been used to probe the products resulting from the reaction between CH3CHOO and water. The hydrogen-bonded complex between CH3CHOO and water together with the reaction product, hydroxyethyl hydroperoxide, were observed in the discharged plasma of a CH3CHI2/O-2/water gas mixture. The experimentally determined rotational parameters support the identification of the complex between water and the syn-CH3CHOO conformer and two conformers of hydroxyethyl hydroperoxide, produced from the anti-CH3CHOO conformer and water. Published by AIP Publishing.

Original languageEnglish
Article number014308
Number of pages8
JournalJournal of Chemical Physics
Volume148
Issue number1
DOIs
StatePublished - 7 Jan 2018

Keywords

  • VOLATILE ORGANIC-COMPOUNDS
  • CONFORMER-DEPENDENT REACTIVITY
  • OZONE-ALKENE REACTION
  • UNIMOLECULAR REACTION
  • MICROWAVE-SPECTRUM
  • TEMPERATURE-DEPENDENCE
  • INTERNAL-ROTATION
  • HYDROGEN-PEROXIDE
  • CARBONYL OXIDES
  • HOX FORMATION

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