Nickel(II) bromide
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Nickel(II) bromide is the name for the inorganic compounds with the chemical formula NiBr2(H2O)x. The value of x can be 0 for the anhydrous material, as well as 2, 3, or 6 for the three known hydrate forms. The anhydrous material is a yellow-brown solid which dissolves in water to give blue-green hexahydrate (see picture).
Quick Facts Names, Identifiers ...
Anhydrous | |
Hexahydrate | |
Names | |
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IUPAC name
Nickel(II) bromide | |
Other names
Nickel dibromide, Nickel bromide, Nickelous bromide | |
Identifiers | |
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3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.033.318 |
PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
NiBr2 | |
Molar mass | 218.53 g/mol |
Appearance | yellow-brown crystals |
Odor | odorless |
Density | 5.10 g/cm3[1] |
Melting point | 963 °C (1,765 °F; 1,236 K) sublimes[1] |
1.13 kg/L (0 °C) 1.22 kg/L (10 °C) 1.31 kg/L (20 °C)[1] 1.44 kg/L (40 °C) 1.55 kg/L (100 °C)[2] | |
Band gap | 2.5 eV[3] |
+5600.0·10−6 cm3/mol[4] | |
Structure[5] | |
hexagonal, hR9 | |
R3m, No. 166 | |
a = 0.36998 nm, c = 1.82796 nm | |
Formula units (Z) |
3 |
Thermochemistry[6] | |
Std enthalpy of formation (ΔfH⦵298) |
−212.1 kJ·mol−1 |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards |
Irritant, corrosive |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Related compounds | |
Other anions |
nickel(II) fluoride nickel(II) chloride nickel(II) iodide |
Other cations |
cobalt(II) bromide copper(II) bromide palladium(II) bromide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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