Trinickel boride

Trinickel boride is a compound of nickel and boron with chemical formula Ni
3B. It is one of the borides of nickel.

Trinickel boride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.346
EC Number
  • 234-495-1
Properties
Ni3B
Molar mass 186.89 g/mol
Hazards
GHS pictograms
GHS Signal word Danger
H317, H350i, H372, H400, H410
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

The compound was described in 1959 by R. Fruchart,[2] S. Rundquist,[3] and L. H. Anderson and R. Kiessling.[4] It is a hard solid with the cementite crystal structure.[5]

Synthesis

Trinickel boride can be obtained, as grains embedded in a nickel matrix, by heating Brown's P-1 and P-2 "nickel boride"catalyst to 250 °C. This catalyst is produced by reduction of nickel salts with sodium borohydride.[5]

Trinickel boride can be obtained also by compressing nickel and boron powders with explosives.[6]

Recently it has been found that Ni
3B can be formed (together with other nickel borides) by heating sodium borohydride with powdered nickel metal 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
3Ni + 2B
2H
6 + NaH ↔ Ni
3B + 3BH
3 + 2H
2 + Na

but other reactions occur, yielding other borides.[7]

See also

References
  1. US National Institutes of Health (2020): "Nickel boride (Ni3B)". Compound page at the NCBI PubChem site. Accessed on 2020-07-18.
  2. R. Fruchart, Ann. Chim., 4, 1247 (1959).
  3. S. Rundquist, Acta Chem. Scand., 12, 658 (1959).
  4. L. H. Anderson and R. Kiessling, Acta Chem. Scand., 4, 160 (1950).
  5. L. J. E. Hofer, J. F. Shultz, R. D. Panson, and R. B. Anderson (1964): "The nature of the nickel boride formed by the action of sodium borohydride on nickel salts". Inorganic Chemistry, volume 3, issue 12, pages 1783–1785. doi:10.1021/ic50022a031
  6. Michail A. Korchagin, Dina V. Dudina, Boris B. Bokhonov, Natalia V. Bulina, Arina V. Ukhina, and Igor S. Batraev (2018): "Synthesis of nickel boride by thermal explosion in ball-milled powder mixtures". Journal of Materials Science, volume 2018, issue 19. doi:10.1007/s10853-018-2290-8
  7. Mahboobeh Shahbazi, Henrietta Cathey, Natalia Danilova and Ian D.R. Mackinnon (2018): "Single Step Process for Crystalline Ni-B Compounds". Materials, volume 11, issue 7, article 1259-. doi:10.3390/ma11071259


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