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
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
PublisherNational Research Council of Canada. NRC Research Press
In
  • Canadian Journal of Physics 49, no. 3: 317–322.
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 modified2023-01-24
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