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Identifiers | |
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3D model (JSmol) | |
ChemSpider | |
ECHA InfoCard | 100.031.345 |
EC Number |
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PubChem CID | |
CompTox Dashboard (EPA) | |
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Properties | |
Ni2B | |
Molar mass | 128.2 g/mol |
Hazards | |
GHS labelling: | |
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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). |
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]
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
but other reactions occur, yielding other borides. [4]