Beam maser spectroscopy on CD3CN

Alice M. Murray, Stephen G Kukolich

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Abstract

The J=1→0 rotational transitions of CD3CN were measured using a two-cavity molecular beam maser spectrometer. This spectrometer employs the Ramsey method of separated oscillating fields to obtain very high resolutions and allows precise measurements of the hyperfine structure splittings. The nitrogen quadrupole coupling constant is eqaa(N)=- 4229.2±0.6 kHz and the deuterium quadrupole constant is eq aaQ(D)=-55.1±0.4 kHz. Assuming cylinderical symmetry about the C-D bond axis we obtain the C-D bond-axis deuterium quadrupole coupling strength of eqzzQ(O)=169.6±4.5 kHz. The A-axis rotational constant, and nitrogen and deuterium spin-rotation interaction strengths are also reported.

Original languageEnglish (US)
Pages (from-to)3557-3559
Number of pages3
JournalThe Journal of Chemical Physics
Volume78
Issue number6
Publication statusPublished - 1983

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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