Nickel(II) cyanide is the inorganic compound with a chemical formula Ni(CN)2. The trihydrate is a gray-green solid that is insoluble in most solvents including water, while the anhydrous form is a yellow solid.
Production Addition of two equivalents of sodium or potassium cyanide to a solution of nickel(II) ions in aqueous solution leads to the precipitation of nickel(II) cyanide trihydrate. On heating the trihydrate to 140 °C, this hydrate converts to anhydrous nickel(II) cyanide.
Chemical properties
Nickel(II) cyanide dissolves in potassium cyanide solution to produce a yellowish solution containing potassium tetracyanonickelate: Ni(CN)2 + 2 KCN → K2[Ni(CN)4] Nickel(II) cyanide will react with dimethylglyoxime (dmgH2) and produce hydrogen cyanide:《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. – "Handbook of Inorganic Chemical Reaction Equations". Cao Zhongliang, Wang Zhenyun, ed. Hunan Science and Technology Press. Chapter 13: Iron Series Elements. P379. 【其他含镍的化合物】– 【Other nickel-containing compounds】. Ni(CN)2 + 2dmgH2 → Ni(dmgH)2 + 2HCN
See also Palladium dicyanide
References