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New High-Resolution Analysis of the ν3, ν4, and ν6Bands of D2CO Measured by Fourier Transform Spectroscopy

✍ Scribed by A. Perrin; J.-M. Flaud; A. Predoi-Cross; M. Winnewisser; B.P. Winnewisser; G. Mellau; M. Lock

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
269 KB
Volume
187
Category
Article
ISSN
0022-2852

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✦ Synopsis

A reanalysis of the n 3 , n 4 , and n 6 interacting bands of D 2 CO has been carried out in the region 850-1250 cm 01 using high-resolution Fourier transform spectra recorded at Giessen. As compared to the previous study of these bands (1987, K. Nakagawa, R. H. Schwendeman, and J. W. C. Johns, J. Mol. Spectrosc. 122, 462-476) higher J and K a transitions were assigned for the three bands, leading to a better determination of the upper state constants. The £ 3 Å 1, £ 4 Å 1, and £ 6 Å 1 experimental energy levels were introduced in a least-squares fit calculation together with the microwave measurements available in the literature in order to obtain the upper state parameters (band centers, rotational and coupling constants). In this calculation, which allowed us to reproduce both the infrared and the microwave measurements to within their experimental accuracies, the A-, B-, and C-type Coriolis interactions involving the rotational levels belonging to the £

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