University of Illinois Urbana-Champaign

THE SIMPLEST CRIEGEE INTERMEDIATE (H2C = O–O): EQUILIBRIUM STRUCTURE AND POSSIBLE FORMATION FROM ATMOSPHERIC LIGHTNING

McCarthy, Michael C.

Content Files
WJ03_Abstract.pdf
WJ03_Abstract.txt
WJ03_Presentation.pptx

Permalink

https://hdl.handle.net/2142/50767

Description

Title
THE SIMPLEST CRIEGEE INTERMEDIATE (H2C = O–O): EQUILIBRIUM STRUCTURE AND POSSIBLE FORMATION FROM ATMOSPHERIC LIGHTNING
Author(s)
McCarthy, Michael C.
Contributor(s)
  • Stanton, John F.
  • Womack, Carrie
  • Nguyen, Thanh Lam
  • Martinez, Oscar, Jr.
  • Crabtree, Kyle N.
  • Cheng, Lan
Issue Date
2014-06-18
Keyword(s)
Structure determination
Date of Ingest
  • 2014-09-17T16:54:45Z
  • 2015-04-14T18:40:12Z
Abstract
Fourier transform microwave spectroscopy in combination with double-resonance techniques has been used to detect the rotational spectra of all five singly-substituted isotopic species of \chem{H_2C=O–O}, the simplest Criegee intermediate. By correcting the rotational constants of these species and those of four others previously reported by Nakajima and Endo (\textit{J. Chem. Phys.} \textbf{39}, 101103, 2013) for zero-point vibrational motion calculated theoretically, a highly precise equilibrium structure is reported for this important atmospheric intermediate. In contrast to the production method employed by most other groups, which has emphasized the use of halogenated percursors, we find that \chem{H_2C=O–O} is produced in good yield and fairly selectively by passing a mixture of methane and excess molecular oxygen through an electrical discharge. For this reason \chem{H_2C=O–O} may be produced in the direct vicinity of atmospheric lightning.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
English
Permalink
http://hdl.handle.net/2142/50767
DOI
https://doi.org/10.15278/isms.2014.WJ03
Copyright and License Information
Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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Abstracts & Presentations - 2014 International Symposium on Molecular Spectroscopy PRIMARY