# EXTENDED ASSIGNMENT OF THE $v_{1}$ BAND OF $H_{2}D^{+}$ and $HD_{2}^{+}$

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 Title: EXTENDED ASSIGNMENT OF THE $v_{1}$ BAND OF $H_{2}D^{+}$ and $HD_{2}^{+}$ Creators: Jagod, M.- F.; Gabrys, C. M.; Rosslein, M.; Oka, T. Issue Date: 1992 Publisher: Ohio State University Abstract: In our plasma spectroscopic sean for $CH_{2}D^{+}$ and $CHD_{2}^{+}$, many, spectral lines of $H_{2}D^{-}$ and $HD^{+}_{2}$ were strongly observed in the $CD_{4}$-$CH_{4}$-$H_{2}$-He discharge, although the chemistry was optimized for the detection of deuterated hydrocarbons. We have extended the assignments of the $v_{1}$ band of $H_{2}D^{+1}$ and $HD_{2}^{+2}$, in the region from $2950 cm^{-1}$ to $3240cm^{-1}$. Both were fitted to the Watson A-reduced Hamiltonian, with rotational and quartic centrifugal distortion constants. Correction of the previous $H_{2}$$D^{+}$ assignment of $3068.702cm^{-1}$ from 5$_{15} \leftarrow$ $4_{14}$ to $5_{05} \leftarrow$ $4_{04}$ substantially improved the fit. Description: 1. T. Amano, J. Opt. Soc. Am. B 2, 790 (1985). 2. O.L. Polyanski and A.R.W. McKellar, J. Chem. Phys. 92, 4039 (1990). Author Institution: Department of Chemistry and Department of Astronomy and Astrophysics, The University of Chicago; Physikalisch-Chemisches Institut, der Universit\""{a}t Z\""{u}rich URI: http://hdl.handle.net/1811/12690 Other Identifiers: 1992-MF-02