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The millimeter-wave spectrum of 2-cyanoethanol

Braakman, Rogier and Blake, Geoffrey A. (2010) The millimeter-wave spectrum of 2-cyanoethanol. Journal of Molecular Spectroscopy, 262 (2). pp. 100-106. ISSN 0022-2852.

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In order to better characterize the chemistry involving C ≡ N groups in regions of star-formation, we have recorded the millimeter-wave rotational spectrum of 2-cyanoethanol. Almost 6000 new transitions were assigned to two separate conformers and three torsionally excited states. The lowest energy conformer, gauche-2-cyanoethanol, its 1st excited torsion, and the ground state for the anti-I-conformer are best characterized with basic asymmetric rigid-rotor Hamiltonians including distortion. All fit close to experimental uncertainty. Fits for the 2nd and 3rd excited torsional states for the gauche-conformer are of somewhat lower quality, which might be explained by a potential interaction between these states. The results of the various fits are discussed in this paper. In all, the present characterization of the spectrum and extensions through prediction should be more than sufficient to guide future millimeter-wave observational studies of this species in the interstellar medium.

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Blake, Geoffrey A.0000-0003-0787-1610
Additional Information:© 2010 Elsevier Inc. Received 20 March 2010; revised 21 May 2010. Available online 8 June 2010. We wish to thank Dr. B. J. Drouin for the use of his mm-wave spectrometer at JPL in the initial attempts at acquiring data in this project. We also thank the reviewers for useful comments in improving the manuscript. This work was funded, in part, by grants from the NASA APRA and Exobiology programs.
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Subject Keywords:Rotational spectroscopy; Cyano-chemistry; Astrochemistry
Issue or Number:2
Record Number:CaltechAUTHORS:20100830-140113420
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19717
Deposited By: Tony Diaz
Deposited On:01 Sep 2010 18:46
Last Modified:03 Oct 2019 02:00

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