Dinickel boride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.345
EC Number
  • 234-494-6
  • InChI=1S/B.2Ni
    Key: WRLJWIVBUPYRTE-UHFFFAOYSA-N
  • [B].[Ni].[Ni]
Properties
Ni2B
Molar mass 128.2 g/mol
Hazards
GHS labelling:
GHS07: Exclamation markGHS08: Health hazardGHS09: Environmental hazard
Danger
H317, H350i, H372, H410
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Dinickel boride is a chemical compound of nickel and boron with formula Ni
2B.[1][2] 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).[3]

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.[4]

See also

References

  1. 1 2 US National Institutes of Health (2020): "Nickel boride (Ni2B)". Compound page at the NCBI PubChem site. Accessed on 2020-07-18.
  2. ↑ 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).
  3. ↑ 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.
  4. ↑ 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.
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