The 4875 Å band system of cis glyoxal

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1139/p71-037
AuthorSearch for: 1; Search for: 1
Name affiliation
  1. National Research Council of Canada
FormatText, Article
Journal titleCanadian Journal of Physics = Revue canadienne de physique
ISSN0008-4204
1208-6045
Volume49
Issue3
Pages317–322
Abstract
The 4875 Å band of glyoxal has been photographed in absorption under high resolution and a rotational analysis carried out. The band is of type C and the principal molecular constants are: A′ = 0.9069 cm−1, B′ = 0.1983 cm−1, C′ = 0.1627 cm−1, A″ = 0.8910 cm−1, B″ = 0.2066 cm−1, C″ = 0.1681 cm−1, v0 = 20 507.57 cm−1. The A-rotational constants are smaller by a factor of ~2 than the constants found earlier for trans glyoxal. The new results are consistent with the assignment of the band to an allowed 1B1–1A1 (π*–n) transition of cis glyoxal. Temperature studies indicate that the cis isomer lies 1125 ± 100 cm−1 above the trans isomer. This is the first time that cis glyoxal has been detected experimentally.
Publication date
PublisherNRC Research Press
NoteThe authors were affiliated with the National Research Council of Canada, Division of Physics when they authored this article.
LanguageEnglish
Peer reviewedYes
NRC numberNRCC 11655
NPARC number23002984
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Record created2018-04-04
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