Nickel(II) cyanide

Nickel(II) cyanide is an inorganic compound with a chemical formula Ni(CN)2.

Nickel(II) cyanide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.008.329
EC Number
  • 209-160-8
UNII
UN number 1653
Properties
Ni(CN)2
Molar mass 110.729
Appearance yellow-brown solid（dry）
blue gray solid（tetrahydrate）[1]
Hazards
GHS pictograms
GHS Signal word Danger
H317, H334, H350, H372, H400, H410
P201, P202, P260, P261, P264, P270, P272, P273, P280, P281, P285, P302+352, P304+341, P308+313, P314, P321, P333+313, P342+311, P363, P391, P405, P501
Related compounds
Other cations
 Iron(II) cyanide
Cobalt(II) cyanide
Related compounds
 Potassium cyanonickelate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Production

Reacting potassium cyanide and salts containing nickel(II) ions in aqueous solution can precipitate nickel(II) cyanide tetrahydrate. On heating the tetrahydrate to 140°C, it can produce dry (anhydrous) nickel(II) cyanide.[1]

Chemical properties
K2[Ni(CN)4] (a tetracyanonickelate) solution

Nickel(II) cyanide dissolves in potassium cyanide solution to produce a yellowish solution:

Ni(CN)2 + 2 KCN → K2[Ni(CN)4]

Nickel(II) cyanide will react with dimethylglyoxime and produce hydrogen cyanide:[2]

Ni(CN)2 + 2 C4H8O2N2 → Ni(C4H7O2N2) + 2 HCN

References
  1. 《无机化学丛书》.第九卷 锰分族 铁系 铂系. 科学出版社. P286. 氰化镍(II)
  2. 《无机化学反应方程式手册》.曹忠良 王珍云 编.湖南科学技术出版社.第十三章 铁系元素. P379. 【其他含镍的化合物】
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