Nitrogen Quadrupole Coupling Measurements on ON-NO2 Using the Flygare-Balle Pulsed-Beam Spectrometer

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Abstract

High-resolution measurements of the 101 ← 000, 212 ← 111, 202 ← 101, 211 ← 10, 312 ← 313, and 413 ← 414 transitions in the ON-NO2 complex were made by using a pulsed-beam, Fourier transform microwave spectrometer. Nearly all hyperfine structure components were resolved on observed transitions except for the 202 ← 101 group. The quadrupole coupling tensors in the principal axis system were determined for both nitrogen atoms. The nitrogen quadrupole coupling components for the NO group are eQqaa = −1.7766 ± 0.0037 MHz and eQqbb = 0.0585 ± 0.0021 MHz. For the NO2 group eQqaa = −0.5260 ± 0.0035 MHz and eQqbb = −4.1941 ± 0.0018 MHz. The rotational constants obtained are A = 12412 ± 22 MHz, B = 4226.530 ± 0.012 MHz, and C = 3152.966 ± 0.012 MHz. Rotational transition frequencies and estimates of spin-rotation interaction strengths are given. The observed quadrupole coupling strengths are substantially different from those observed for the free NO and NO2 molecules.

Original languageEnglish (US)
Pages (from-to)6927-6929
Number of pages3
JournalJournal of the American Chemical Society
Volume104
Issue number25
DOIs
StatePublished - Jan 1 1982
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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