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HandWiki. Nickel Oxides. Encyclopedia. Available online: https://encyclopedia.pub/entry/33781 (accessed on 10 October 2026).
HandWiki. Nickel Oxides. Encyclopedia. Available at: https://encyclopedia.pub/entry/33781. Accessed October 10, 2026.
HandWiki. "Nickel Oxides" Encyclopedia, https://encyclopedia.pub/entry/33781 (accessed October 10, 2026).
HandWiki. (2022, November 10). Nickel Oxides. In Encyclopedia. https://encyclopedia.pub/entry/33781
HandWiki. "Nickel Oxides." Encyclopedia. Web. 10 November, 2022.
Nickel Oxides
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Nickel forms a series of mixed oxide compounds which are commonly called nickelates. A nickelate is an anion containing nickel or a salt containing a nickelate anion, or a double compound containing nickel bound to oxygen and other elements. Nickel can be in different or even mixed oxidation states, ranging from +1, +2, +3 to +4. The anions can contain a single nickel ion, or multiple to form a cluster ion. The solid mixed oxide compounds are often ceramics, but can also be metallic. They have a variety of electrical and magnetic properties. Rare-earth elements form a range of perovskite nickelates, in which the properties vary systematically as the rare-earth element changes. Fine tuning of properties is achievable with mixtures of elements, applying stress or pressure, or varying the physical form. Inorganic chemists call many compounds that contain nickel centred anions "nickelates". These include the chloronickelates, fluoronickelates, tetrabromonickelates, tetraiodonickelates, cyanonickelates, nitronickelates and other nickel-organic acid complexes such as oxalatonickelates.

fluoronickelates chloronickelates oxalatonickelates

References

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