# The Borohydride Ion in the Lithium Borohydride Lattice

## Abstract

ALTHOUGH the comments of Dr. Brown on my communication are very encouraging for further theoretical investigations, it should be pointed out that the equation used by Brown to calculate the doubly degenerate ν̄2(E) vibration of the $BH 4 −$ ion was derived for a tetrahedral ion or molecule which has a spherical and rigid electron distribution. This assumption is certainly not valid in the case of the $BH 4 −$ ion in the LiBH4 lattice. In this lattice the tetrahedral ion is considerably deformed, having the site symmetry C s. In addition, it must be pointed out that the crystalline field in which any ion is embedded has a profound influence on the frequencies of vibrational modes (see, for example, refs. 1 and 2). The frequency of ν2, calculated according to the formula derived by Brown, is that of the free tetrahedral $BH 4 −$ ion and can only be compared, for example, with the Raman frequencies of $BH 4 −$ in liquid ammonia.

## Access options

from\$8.99

All prices are NET prices.

## References

1. 1

Strasheim, A., and Buijs, K., J. Chem. Phys., 34, 691 (1961).

2. 2

Ketelaar, J. A. A., Schutte, C. J. H., and Schram, B. L., Spectrochim. Acta, 13, 336 (1959).

## Rights and permissions

Reprints and Permissions

SCHUTTE, C. The Borohydride Ion in the Lithium Borohydride Lattice. Nature 190, 805 (1961). https://doi.org/10.1038/190805a0

• Issue Date:

• ### Chloride, -Hydride and -Borohydride Derivatives of Difluorenyl Thallium(III)

• N. Kumar
•  & R. K. Shapma

Journal of the Chinese Chemical Society (1974)

• ### Borohydride derivatives of tricyclopentadienyl cerium(IV) and bisindenyl cerium(IV)

• S. Kapur
• , B.L. Kalsotra
• , R.K. Multani
•  & B.D. Jain

Journal of Inorganic and Nuclear Chemistry (1973)

• ### Borohydride derivatives of dicyclopentadienyl thallium(III) and diindenylthallium(III)

• N. Kumar
• , R.K. Multani
•  & B.L. Kalsotra

Journal of Organometallic Chemistry (1973)

• ### Studies on bis(borohydride) derivatives of di-π-cyclopentadienylmolybdenum(VI) and -tungsten(VI)

• S.P. Anand
• , R.K. Multani
•  & B.D. Jain

Journal of Organometallic Chemistry (1971)

• ### Forbidden transitions in the infra-red spectra of some terahedral anions—II. Sulphates

• S.D. Ross

Spectrochimica Acta (1962)