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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
Subject(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.
Issue Date:2014-06-18
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:McCarthy, M.C.; Stanton, J.F.; Womack, C.; Nguyen, T.L.; Martinez Jr., O.; Crabtree, K.N.; Cheng, L. THE SIMPLEST CRIEGEE INTERMEDIATE (H2C=O–O): EQUILIBRIUM STRUCTURE AND POSSIBLE FORMATION FROM ATMOSPHERIC LIGHTNING. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.WJ03
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/50767
DOI:10.15278/isms.2014.WJ03
Rights Information:Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/
Date Available in IDEALS:2014-09-17
2015-04-14


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