ANALYSIS OF $2\nu_{1}$ OF HDSe
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Date
1979
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Ohio State University
Abstract
We have run a high resolution infrared absorption spectrum of $2\nu_{1}$, the Se-H stretch overtone of HDSe, and assigned a total of approximately 300 transitions among the isotopic species containing Se isotopes 82, 80, 78, 77 and 76. Using $Typke’s^{1}$ reduced Hamiltonian, we analyzed all isotopes simultaneously, with a standard deviation = $0.005 cm^{-1}$. Our ground state constants were obtained from a simultaneous least squares fit of our ground state combination differences and Veselago’s microwave data. The upper state constants were obtained from a least squares fit of the spectral lines, keeping the ground state constants fixed. For $HD^{80}$Se we obtained: (in $cm^{-1}$) \[ \begin{array}{ll} Ground\ State & Upper\ State\\ A =7.9530_{39} & A = 7.5034_{11}\\ B =4.0174_{08} & B = 4.0167_{49}\\ C =2.6328_{36} & C = 2.5853_{22}\\ & V_{0} = 4617.89_{57}\\ \end{array} \]
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$^{1}$V. Typke, J. Mol. Spectrosc. 63, 170 (1976). $^{2}$V. G. Veselago, Optics and Spectroscopy, VI, 286 (1959).
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