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Nickel(II) bromide

Nickel(II) bromide
Kristallstruktur Cadmiumiodid.png
Bromid nikelnatý.PNG
Names
IUPAC name
Nickel(II) bromide
Other names
Nickel dibromide,
Nickel bromide,
Nickelous bromide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.318
PubChem CID
Properties
NiBr2
Molar mass 218.53 g/mol
Appearance yellow-brown crystals
Odor odorless
Density 5.098 g/cm3
Melting point 963 °C (1,765 °F; 1,236 K) sublimes
113 g/100ml (0 °C)
122 g/100ml (10 °C)
134 g/100ml (25 °C)
144 g/100ml (40 °C)
155 g/100ml (100 °C)
Solubility soluble in ethanol
+5600.0·10−6 cm3/mol
Hazards
Main hazards Irritant, corrosive
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored 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).
N  (what is YesYN ?)
Infobox references

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, and 6 for the three hydrate. The anhydrous material is a yellow-brown solid dissolves in water and in ethanol to give blue-green hexahydrate (see picture). are also known.

The structure of the nickel bromides varies with the degree of hydration. In all cases, nickel adopts octahedral molecular geometry.

NiBr2 has Lewis acid character. NiBr2 is also used to prepare catalysts for cross-coupling reactions and various carbonylations.

Nickel(II) is toxic and suspected to be a cancer agent.


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