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Nickel selenide

| NFPA-H = | NFPA-F = | NFPA-R = | NFPA-S = }} Nickel selenide is the inorganic compound with the formula NiSe. As for many metal chalcogenides, the phase diagram for nickel(II) selenide is complicated. Two other selenides of nickel are known, NiSe2 with a pyrite structure, and Ni2Se3. Additionally, NiSe is usually nonstoichiometric and is often described with the formula Ni1−xSe, with 0

Synthesis and structure

Typically, NiSe is prepared by high temperature reaction of the elements. Such reactions typically afford mixed phase products. Milder methods have also been described using more specialised techniques such as reactions of the elements in liquid ammonia in a pressure vessel.

Like many related materials, nickel(II) selenide adopts the nickel arsenide motif. In this structure, nickel is octahedral and the selenides are in trigonal prismatic sites.

References

References

  1. Zhongbin Zhuang, Qing Peng Jing Zhuang, Xun Wang, Yadong Li "Controlled Hydrothermal Synthesis and Structural Characterization of a Nickel Selenide Series" Chemistry - A European Journal 2005, Volume 12, pages 211–217. {{doi. 10.1002/chem.200500724
  2. Geoff Henshaw, Ivan P. Parkin, Graham A. Shaw "Convenient, room-temperature liquid ammonia routes to metal chalcogenides" J. Chem. Soc., Dalton Trans., 1997, 231-236. {{doi. 10.1039/A605665B
  3. Wells, A.F. (1984) Structural Inorganic Chemistry, Oxford: Clarendon Press. {{ISBN. 0-19-855370-6.
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