# The Borohydride Ion in the Lithium Borohydride Lattice

## Abstract

IN a recent communication in Nature, Dr. C. J. H. Schutte1 has suggested that the anomalous band occurring at about 1,250 cm.−1 in the paraffin-oil mull spectrum of lithium borohydride at room temperature2 may be assigned to the doubly degenerate frequency, ν̄2(E), of tne tetrahedral $BH 4 −$ ion. This frequency is normally inactive in the infra-red, but it is suggested that under the space-group V h of crystalline, orthorhombic lithium borohydride, the $BH 4 −$ ions occupy sites of symmetry C s; the degeneracy is thereby removed so that all the fundamentals are now allowed.

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## References

1. 1

Schutte, C. J. H., Nature, 189, 745 (1961).

2. 2

Price, W. C., J. Chem. Phys., 17, 1044 (1949).

3. 3

Brown, D. A., J. Chem. Phys., 29, 451 (1958).

4. 4

Longuet-Higgins, H. C., and Brown, D. A., J. Inorg. and Nuclear Chem., 1, 60 (1955).

5. 5

Ford, P. T., and Richards, R. E., Discuss. Farad. Soc., 19, 230 (1955).

6. 6

Taylor, R. C., Schultz, D. R., and Emery, A. R., J. Amer. Chem. Soc., 80, 27 (1958).

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