Barium hexaboride
| Names | |
|---|---|
| IUPAC name
Barium boride | |
| Other names
Barium hexaboride | |
| Identifiers | |
3D model (JSmol) |
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| ECHA InfoCard | 100.031.774 |
PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties[1] | |
| BaB6 | |
| Molar mass | 202.19 g·mol−1 |
| Appearance | Black, cubic crystals |
| Density | 4.36 g/cm3 |
| Melting point | 2,070 °C (3,760 °F; 2,340 K) |
| Insoluble | |
| Solubility in acids | Soluble |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Barium hexaboride is a hard, black crystalline compound with a high melting point.
Synthesis
[edit]It can be synthesized by passing barium vapour over boron crystals at >750 °C (1,380 °F):[citation needed]
- Ba + 6B → BaB6
It can also be synthesized by reacting barium chloride with boron in two stages: firstly at 900 °C (1,650 °F) for 30 minutes and then at 1,500 °C (2,730 °F) for 60 minutes.[citation needed]
Potential applications
[edit]Barium hexaboride has been considered as a candidate for use in hot-cathode electron guns.[citation needed]
References
[edit]- ↑ Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). Boca Raton, Florida: CRC Press. pp. 4–49. ISBN 9781498754293.
Further reading
[edit]- An analysis of the fine structure of BaB6: Massidda, S.; Monnier, R.; Stoll, E. (October 2000). "Electronic structure of barium hexaboride". The European Physical Journal B. 17 (4): 645–649. Bibcode:2000EPJB...17..645M. doi:10.1007/s100510070103. ISSN 1434-6028.
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