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

McCarthy, Michael C.

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

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

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

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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