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High-Resolution Infrared and Microwave Study of the n20 and n21 Levels near 300 cm-1 in 1,2,4-Triazine.

Författare:
Publiceringsår: 2003
Språk: Engelska
Sidor: 9-18
Publikation/Tidskrift/Serie: Journal of Molecular Spectroscopy
Volym: 217
Nummer: 1
Dokumenttyp: Artikel
Förlag: Elsevier

Sammanfattning

The gas phase far-IR spectrum of the small nu, Greek20 (A″, 367.88 cm−1) and small nu, Greek21 (A″, 311.28 cm−1) bands of 1,2,4-triazine, a five membered ring having the point group Cs, has been studied at a resolution ranging from 0.002 to 0.003 cm−1. From the MW spectrum 58 transitions in the small nu, Greek20 level and 64 in the small nu, Greek21 level have been assigned. The small nu, Greek20 and small nu, Greek21 modes which are due to non-planar motions of the ring system are found to be nearly unperturbed. From a simultaneous analysis of IR and MW transitions band centers, rotational constants, and the quartic centrifugal distortion constants ΔJ, ΔJK, ΔK, small delta, GreekJ, and small delta, GreekK have been obtained using the Watson Hamiltonian, A-reduction, IIIr-representation.

Disputation

Nyckelord

  • Chemistry
  • 1
  • 2
  • 4-Triazine
  • Infrared
  • Microwave
  • Rotational constants

Övriga

Published
Yes
  • ISSN: 0022-2852

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