MICROWAVE SPECTRA OF ALKALI METAL TETRAHYDROBORATES IN EXCITED VIBRATIONAL STATES
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Date
1992
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Ohio State University
Abstract
We have observed two sets of vibrational satellites for each of $LiBH_{4}$, $NaDH_{4}$, $NaBD_{4}$, and $KBH_{4}$ and have assigned them to the non-degenerate alkali metal-boron stretching state and the degenerate $BH_{4}$ bending (or internal rotation) state. The observed spectral patterns were metal found quite different for different molecular species. The most conspicuous anomaly the $D_{JK}$ constant of $NaBH_{4}$, which was opposite in sign for the two vibrational states, and was accounted for by accidental degenercy of the two states strongly coupled by a Coriolis interaction.
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Author Institution: Department of Chemical, Technolo gy, Kanagawa Institute of Technology; Department of Chemical, The Graduate University for Advanced Studies