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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.

Hegelund, F; Wugt Larsen, René LU ; Nelander, Bengt LU ; Christen, D. and Palmer, M.H. (2003) In Journal of Molecular Spectroscopy 217(1). p.9-18
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
1, 2, 4-Triazine, Infrared, Microwave, Rotational constants
in
Journal of Molecular Spectroscopy
volume
217
issue
1
pages
9 - 18
publisher
Elsevier
external identifiers
  • wos:000181172100002
  • scopus:0037223407
ISSN
0022-2852
DOI
10.1016/S0022-2852(02)00009-7
language
English
LU publication?
yes
id
b3c26968-1606-4bb3-ac9c-30ba6d3e6736 (old id 128174)
date added to LUP
2007-07-03 12:23:18
date last changed
2018-01-07 08:34:25
@article{b3c26968-1606-4bb3-ac9c-30ba6d3e6736,
  abstract     = {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.},
  author       = {Hegelund, F and Wugt Larsen, René and Nelander, Bengt and Christen, D. and Palmer, M.H.},
  issn         = {0022-2852},
  keyword      = {1,2,4-Triazine,Infrared,Microwave,Rotational constants},
  language     = {eng},
  number       = {1},
  pages        = {9--18},
  publisher    = {Elsevier},
  series       = {Journal of Molecular Spectroscopy},
  title        = {High-Resolution Infrared and Microwave Study of the n20 and n21 Levels near 300 cm-1 in 1,2,4-Triazine.},
  url          = {http://dx.doi.org/10.1016/S0022-2852(02)00009-7},
  volume       = {217},
  year         = {2003},
}