Spectroscopy of the formaldehyde isotopomer H213CO in the microwave to terahertz region

H. S. P. Müller; R. Gendriesch; L. Margulès; F. Lewen; G. Winnewisser; R. Bocquet; J. Demaison; U. Wötzel; H. Mäder

doi:10.1039/B002819N

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Spectroscopy of the formaldehyde isotopomer H₂¹³CO in the microwave to terahertz region†

H. S. P. Müller,*^a R. Gendriesch,^a L. Margulès,^a F. Lewen,^a G. Winnewisser,*^a R. Bocquet,^b J. Demaison,^b U. Wötzel^c and H. Mäder^c

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* Corresponding authors

^a I. Physikalisches Institut, Uniersität zu Köln, Zülpicher Str. 77, Köln, Germany
E-mail: hspm@zeus.ph1.uni-koeln.de, winnewisser@ph1.uni-koeln.de
Fax: ; Fax: +49 221 470 5162

^b Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523, Uniersité de Lille 1, Villeneue d'Ascq Cedex, France

^c Institut für Physikalische Chemie, Christian-Albrechts-Uniersität, Kiel, Germany

Abstract

The pure rotational spectrum of H₂¹³CO in its ground vibrational state has been investigated extensively between 8 and 1900 GHz using samples of natural isotopic abundance as well as samples enriched in ¹³C. The accurate new line frequencies were subjected to a combined fit with previously published data, resulting in distinctly improved spectroscopic constants, which include several octic and one decic centrifugal distortion constants. Fits employing Watson's S and A reductions will be compared. The following rotational constants have been obtained: A_S=281993.0397 (31), B_S=37809.106966 (213), C_S=33215.941417 (207) and A_A=281993.0148 (32), B_A=37811.090040 (219), C_A=33213.976745 (207) MHz, respectively.

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Article information

DOI: https://doi.org/10.1039/B002819N
Article type: Paper
Submitted: 07 Apr 2000
Accepted: 12 Jun 2000
First published: 05 Jul 2000

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Phys. Chem. Chem. Phys., 2000,2, 3401-3404

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Spectroscopy of the formaldehyde isotopomer H₂¹³CO in the microwave to terahertz region

H. S. P. Müller, R. Gendriesch, L. Margulès, F. Lewen, G. Winnewisser, R. Bocquet, J. Demaison, U. Wötzel and H. Mäder, Phys. Chem. Chem. Phys., 2000, 2, 3401 DOI: 10.1039/B002819N

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