Nickel(III) oxide

Nickel (III) oxide
Names
IUPAC name
Nickel (III) oxide
Other names
Nickel sesquioxide,
nickel trioxide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.835
EC Number
  • 215-217-8
RTECS number
  • QR8420000
UNII
  • InChI=1S/2Ni.3O/q2*+3;3*-2
    Key: GNMQOUGYKPVJRR-UHFFFAOYSA-N
  • [O-2].[O-2].[O-2].[Ni+3].[Ni+3]
Properties
Ni2O3
Molar mass 165.39 g/mol
Appearance black-dark gray solid
Density 4.84 g/cm3
Melting point 600 °C (1,112 °F; 873 K) (decomposes)
negligible
Hazards
NFPA 704 (fire diamond)
2
0
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Nickel (III) oxide is the inorganic compound with the formula Ni2O3. It is not well characterized, and is sometimes referred to as black nickel oxide. Traces of Ni2O3 on nickel surfaces have been mentioned.

Nickel (III) oxide has been studied theoretically since the early 1930s, supporting its unstable nature at standard temperatures. A nanostructured pure phase of the material was synthesized and stabilized for the first time in 2015 from the reaction of nickel(II) nitrate with sodium hypochlorite and characterized using powder X-ray diffraction and electron microscopy.

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