INFRARED-ANALYSIS OF THE ANHARMONIC RESONANCE BETWEEN NU(8)+NU(9) ANDTHE DARK STATE NU(6)+NU(7) OF HNO3

Authors
WANG WF ONG PP TAN TL LOOI EC TEO HH
Citation
Wf. Wang et al., INFRARED-ANALYSIS OF THE ANHARMONIC RESONANCE BETWEEN NU(8)+NU(9) ANDTHE DARK STATE NU(6)+NU(7) OF HNO3, Journal of molecular spectroscopy, 183(2), 1997, pp. 407-413
Citations number
20
Categorie Soggetti
Spectroscopy,"Physics, Atomic, Molecular & Chemical
Journal title
Journal of molecular spectroscopy → ACNP
ISSN journal
00222852
Volume
183
Issue
2
Year of publication
1997
Pages
407 - 413
Database
ISI
SICI code
0022-2852(1997)183:2<407:IOTARB>2.0.ZU;2-M
Abstract
The high-resolution FTIR spectrum of the nu(8) + nu(9) band of HNO3 ar ound 1205 cm(-1) has been measured and analyzed. The bright state was found to be strongly perturbed by its neighboring dark state nu(6) + n u(7) at the coincident levels Taking account of the Delta K = +/-2 anh armonic resonance, a simultaneous fit of nu(8) + nu(9) and nu(6) + nu( 7) was performed leading to a good reproduction of the nu(8) + nu(9) b and with a rms uncertainty of 0.00046 cm(-1). A set of rovibrational c onstants for nu(8) + nu(9) were accurately determined, while for nu(6) + nu(7) the rotational constant B and the band origin were obtained. (C) 1997 Academic Press.