Nickel(II) bromide

Nickel(II) bromide

Anhydrous

Hexahydrate
Names
IUPAC name
Nickel(II) bromide
Other names
Nickel dibromide,
Nickel bromide,
Nickelous bromide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.318 Edit this at Wikidata
UNII
  • InChI=1S/2BrH.Ni/h2*1H;/q;;+2/p-2 ☒N
    Key: IPLJNQFXJUCRNH-UHFFFAOYSA-L ☒N
  • [Ni+2].[Br-].[Br-]
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
3
Thermochemistry[6]
−212.1 kJ·mol−1
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Irritant, corrosive
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
0
0
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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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).

  1. ^ a b c Haynes, p. 4.73
  2. ^ nickel(II) bromide. chemister.ru
  3. ^ Lee, Geunseop; Oh, S.-J. (1991). "Electronic structures of NiO, CoO, and FeO studied by 2pcore-level x-ray photoelectron spectroscopy". Physical Review B. 43 (18): 14674–14682. Bibcode:1991PhRvB..4314674L. doi:10.1103/PhysRevB.43.14674. PMID 9997359.
  4. ^ Haynes, p. 4.129
  5. ^ Nasser, J.A.; Kiat, J.M.; Gabilly, R. (1992). "X-ray investigation of magnetostriction in NiBr2". Solid State Communications. 82 (1): 49–54. Bibcode:1992SSCom..82...49N. doi:10.1016/0038-1098(92)90404-W.
  6. ^ Haynes, p. 5.29