Measurements of deuterium quadrupole coupling in formic acid

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14 Scopus citations

Abstract

The 101-000 rotational transition was observed in HCOOH, HCOOD, and DCOOH using a maser spectrometer. Quadrupole hyperfine structure was completely resolved in HCOOD and DCOOH. The measured quadrupole coupling strength along the OD-bond direction was eqQ=391 kHz and HCOOD and eqQ= 249 kHz along the DC-bond direction in DCOOH. These coupling constants and the deuterium quadrupole coupling in NH2D are compared with the corresponding force constants and the results are in fairly good agreement with the theory of Salem.

Original languageEnglish (US)
Pages (from-to)358-360
Number of pages3
JournalThe Journal of Chemical Physics
Volume51
Issue number50
StatePublished - Dec 1 1969
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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