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High-Resolution Analysis of the ν6, ν7, ν8, and ν9Bands of H15N16O3Measured by Fourier Transform Spectroscopy

✍ Scribed by F. Keller; A. Perrin; J.-M. Flaud; J.W.C. Johns; Z. Lu; E.C. Looi

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
151 KB
Volume
191
Category
Article
ISSN
0022-2852

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✦ Synopsis

The analysis of the 6 , 7 , 8 , and 9 bands of H 15 N 16 O 3 located at 646.9641, 578.4719, 743.6166, and 458.2917 cm Ϫ1 , respectively, has been carried out in the 400 -800 cm Ϫ1 region using high-resolution Fourier transform spectra recorded at Ottawa. Using the ground state energy levels calculated from the v ϭ 0 rotational constants of H 15 N 16 O 3 [A. P. Cox, M. C. Ellis, C. J. Attfield, and A. C. Ferris, J. Mol. Struct. 320, 91-106 (1994)], it was possible to assign the A-type 6 and 7 bands and the C-type 8 and 9 bands of H 15 N 16 O 3 up to high J and K a rotational quantum numbers. The v 6 ϭ 1, v 7 ϭ 1, v 8 ϭ 1, and v 9 ϭ 1 experimental energy levels were then introduced in a least-squares fit calculation and precise upper state Hamiltonian constants (band centers and rotational constants) were determined allowing one to reproduce the infrared data to within the experimental uncertainty.

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