Knowledge Bank

“Raman spectra of the borohydride ion have been obtained from solutions of lithium, sodium, and potassium borohydrides dissolved in liquid ammonia at temperatures of about $-50\circ C$. The investigation included the various isotopic species, $B11H4$, $B11D4-$, $B10H4-$, $B10D4-$, and both $NDa$ and $NDa$ were used as solvents. All fundamentals were observed and a satisfactory assignment has been made which agrees with the polarization data and the product rule. The vibrational assignments of $Al(BH4)3$ will be discussed briefly in terms of the Raman spectra of the four isotopic species in the liquid state at $0\circ C$.”