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The Ground and First Torsional States of CD3CHO

✍ Scribed by I. Kleiner; Juan C. Lopez; S. Blanco; A.R.W. McKellar; N. Moazzen-Ahmadi

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
625 KB
Volume
197
Category
Article
ISSN
0022-2852

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✦ Synopsis

The rotational spectra for the ground and first excited torsional states v t ϭ 0 and 1 in the frequency region of 8 -254 GHz and the v t ϭ 1 4 0 band high-resolution far-infrared spectrum of 2,2,2-d 3 -acetaldehyde (CD 3 CHO) were measured. We fitted a data set consisting of 1016 v t ϭ 1 4 0 far-infrared lines together with 195 microwave lines in v t ϭ 0 and 79 microwave lines in v t ϭ 1 to near-experimental accuracy, using a global model from the earlier literature. The final fit includes lines with J Յ 20 and requires 25 parameters to achieve root-mean-square deviations of 87 and 88 kHz for the microwave v t ϭ 0 and 1 lines, respectively, and of 0.00048 cm Ϫ1 for the far-infrared v t ϭ 1-0 lines. This can be considered a good starting point for future analysis of CD 3 CHO.

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