Nickel(III) oxide

Nickel (III) oxide is the inorganic compound with the formula Ni₂O₃. It is not well characterized,^[1] and is sometimes referred to as black nickel oxide. Traces of Ni₂O₃ on nickel surfaces have been mentioned.^[2][3]

Nickel (III) oxide

Names
IUPAC name Nickel (III) oxide
Other names Nickel sesquioxide, nickel trioxide
Identifiers
CAS Number	1314-06-3 Y
ECHA InfoCard	100.013.835
EC Number	215-217-8
PubChem CID	10313272
RTECS number	QR8420000
UNII	07BD7540U5 Y
CompTox Dashboard (EPA)	DTXSID60893854
Properties
Chemical formula	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)
Solubility in water	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 has been studied theoretically since the early 1930s,^[4] 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.^[5]

References

1. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
2. Aggarwal, P. S.; Goswami, A. (1961). "An oxide of tervalent nickel". The Journal of Physical Chemistry. 65 (11): 2105. doi:10.1021/j100828a503. ISSN 0022-3654.
3. Kang, Jin-Kyu; Rhee, Shi-Woo (2001). "Chemical vapor deposition of nickel oxide films from Ni(C₅H₅)₂/O₂". Thin Solid Films. 391 (1): 57–61. Bibcode:2001TSF...391...57K. doi:10.1016/S0040-6090(01)00962-2.
4. Cairns, R. W.; Ott, Emil (February 1933). "X-Ray Studies of the System Nickel—Oxygen—Water. I. Nickelous Oxide and Hydroxide 1". Journal of the American Chemical Society. 55 (2): 527–533. doi:10.1021/ja01329a013. ISSN 0002-7863.
5. Dey, Sayan; Bhattacharjee, Swarupananda; Chaudhuri, Mahua Ghosh; Bose, Raj Shekhar; Halder, Suman; Ghosh, Chandan Kr (2015-06-18). "Synthesis of pure nickel(III) oxide nanoparticles at room temperature for Cr(VI) ion removal". RSC Advances. 5 (67): 54717–54726. Bibcode:2015RSCAd...554717D. doi:10.1039/C5RA05810D. ISSN 2046-2069.