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Preliminary Investigations of the Silicon Boride, SiB6


ALTHOUGH there has been a good deal of experimental work on the borides of silicon dating back to Moissan1, current reports (ref. 2 and Parthe, E., M.I.T., private communication) have been somewhat confusing as to the exact phases present in the boron–silicon system. We now wish to report that we have prepared single crystals of silicon boride (SiB6) by fusion of the elements. The wet chemical analysis after removal of excess silicon agrees with stoichiometric values for the compound SiB6 as are shown by the following determinations: B—69.05, 70.16, 69.3 Si—29.43, 29.48, 30.4 The density as determined by pycnometer methods is 2.45 gm./c.c.

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  1. 1

    Moissan, H., and Stock, A., C.R. Acad. Sci., Paris, 131 (1900).

  2. 2

    Samsonov, G. V., and Latysheva, V. P., Doklady Akad. Nauk S.S.S.R., 105, No. 3, 499 (1955). Brewer, L., et al., J. Amer. Cer. Soc., 34, 173 (1951). Zhuravlev, N. N., Kristallografia, 1, 666 (1956). Nowotny, H., et al., Monatshefte für Chem., 88, No. 2, 180 (1957).

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