Identifiers | |
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3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.031.346 |
EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
Ni3B | |
Molar mass | 186.89 g/mol |
Hazards | |
GHS labelling: | |
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).
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Trinickel boride is a compound of nickel and boron with chemical formula Ni
3B. It is one of the borides of nickel.
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]
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
but other reactions occur, yielding other borides.[7]