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| Identifiers | |
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| CAS Number | |
| 3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.031.345 
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| EC Number |
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| PubChem CID | |
| CompTox Dashboard (EPA) | |
InChI
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SMILES
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| Properties | |
| Chemical formula | Ni2B |
| Molar mass | 128.2 g/mol |
| Hazards | |
| GHS labelling: | |
| Pictograms |   
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| Signal word | Danger |
| Hazard statements | H317, H350i, H372, H410 |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references | |
Dinickel boride is a chemical compound of nickel and boron with formula Ni
2B. It is one of the borides of nickel.
The formula "Ni
2B" and the name "nickel boride" are often used for a nickel-boron catalyst obtained by reacting nickel salts with sodium borohydride. However, that product is not a well-defined compound, and its bulk formula is closer to Na
2.5B(sic).
Synthesis
Dinickel boride can be obtained (together with other nickel borides) by heating sodium borohydride with powdered nickel metal up to 670 °C in a closed vessel, so that the released hydrogen creates a pressure of up to 3.4 MPa. The main reactions can be summarized as
- 2NaBH
4 ↔ 2NaH + B
2H
6 - 2Ni + 2B
2H
6 + NaH ↔ Ni
2B + 3BH
3 + 2H
2 + Na
but other reactions occur, yielding other borides.
See also
References
- ^ US National Institutes of Health (2020): "Nickel boride (Ni2B)". Compound page at the NCBI PubChem site. Accessed on 2020-07-18.
- Bjurstrom, T. (March 1933). "Röntgenanalyse der Systeme Eisen-Bor, Kobalt-Bor und Nickel-Bor" [X-ray analysis of the iron-boron, cobalt-boron, and nickel-boron systems]. Arkiv för kemi, mineralogi och geologi. 11A (5).
- Hofer, L. J. E.; Shultz, J. F.; Panson, R. D.; Anderson, R. B. (December 1964). "The Nature of the Nickel Boride Formed by the Action of Sodium Borohydride on Nickel Salts". Inorganic Chemistry. 3 (12): 1783–1785. doi:10.1021/ic50022a031. ISSN 0020-1669.
- Shahbazi, Mahboobeh; Cathey, Henrietta; Danilova, Natalia; Mackinnon, Ian (2018-07-22). "Single Step Process for Crystalline Ni-B Compounds". Materials. 11 (7): 1259. Bibcode:2018Mate...11.1259S. doi:10.3390/ma11071259. ISSN 1996-1944. PMC 6073427. PMID 30037149.
| Nickel compounds | |
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| Nickel(0) | |
| Nickel(II) | |
| Nickel(III) | |
| Nickel(IV) | |
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