Nickel dicyanide

Nickel dicyanide
Identifiers
CAS Number	557-19-7 ; tetrahydrate: 13477-95-7 ;
3D model (JSmol)	Interactive image; tetrahydrate: Interactive image;
ChemSpider	10711 ;
ECHA InfoCard	100.008.329
EC Number	209-160-8;
PubChem CID	11184; tetrahydrate: 71317429;
UNII	YX45CR8P6A;
UN number	1653
CompTox Dashboard (EPA)	DTXSID60971065 ;
	InChI InChI=1S/2CN.Ni/c21-2;/q2-1;+2 Key: NLEUXPOVZGDKJI-UHFFFAOYSA-N;
	SMILES [C-]#N.[C-]#N.[Ni+2]; tetrahydrate: [C-]#N.[C-]#N.O.O.O.O.[Ni+2];
Properties
Chemical formula	Ni(CN)2
Molar mass	110.729
Appearance	yellow-brown solid (dry); blue gray solid (tetrahydrate)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H317, H334, H350, H372, H410
Precautionary statements	P201, P202, P260, P261, P264, P270, P272, P273, P280, P281, P285, P302+P352, P304+P341, P308+P313, P314, P321, P333+P313, P342+P311, 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

Nickel dicyanide is the inorganic compound with a chemical formula Ni(CN)₂. It is a gray-green solid that is insoluble in most solvents.^[2]

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 tetrahydrate.^[3] On heating the tetrahydrate to 140 °C, this hydrate converts to anhydrous nickel(II) cyanide.^[2]

Chemical properties

K₂[Ni(CN)₄] (tetracyanonickelate) solution)

Nickel(II) cyanide dissolves in potassium cyanide solution to produce a yellowish solution containing potassium tetracyanonickelate:^[2]^[3]

Ni(CN)₂ + 2 KCN → K₂[Ni(CN)₄]

Nickel(II) cyanide will react with dimethylglyoxime (dmgH₂) and produce hydrogen cyanide:^[4]

Ni(CN)₂ + 2 dmgH₂ → Ni(dmgH)₂ + 2 HCN

References

^ 《无机化学丛书》.第九卷锰分族铁系铂系. 科学出版社. P₂₈₆ – "Inorganic Chemistry Series". Volume 9 Manganese Subgroups, Iron Series, Platinum Series. Science Press. P286. Nickel Cyanide (II). 氰化镍(II) – Nickel cyanide(II).
^ ^a ^b ^c Gail, Ernst; Gos, Stephen; Kulzer, Rupprecht; Lorösch, Jürgen; Rubo, Andreas; Sauer, Manfred (2004). "Cyano Compounds, Inorganic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a08_159.pub2. ISBN 3527306730.
^ ^a ^b Fernelius, W. C.; Burbage, Joseph J. (1946). "Potassium Tetracyanonickelate(II)". Inorganic Syntheses. Vol. 2. pp. 227–228. doi:10.1002/9780470132333.ch73. ISBN 9780470132333.
^ 《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】.

[wj-1] 《无机化学丛书》.第九卷锰分族铁系铂系. 科学出版社. P₂₈₆ – "Inorganic Chemistry Series". Volume 9 Manganese Subgroups, Iron Series, Platinum Series. Science Press. P286. Nickel Cyanide (II). 氰化镍(II) – Nickel cyanide(II).

[Ullmann-2] Gail, Ernst; Gos, Stephen; Kulzer, Rupprecht; Lorösch, Jürgen; Rubo, Andreas; Sauer, Manfred (2004). "Cyano Compounds, Inorganic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a08_159.pub2. ISBN 3527306730.

[IS-3] Fernelius, W. C.; Burbage, Joseph J. (1946). "Potassium Tetracyanonickelate(II)". Inorganic Syntheses. Vol. 2. pp. 227–228. doi:10.1002/9780470132333.ch73. ISBN 9780470132333.

[4] 《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】.

[2]

[1]

[3]

[4]

Nickel dicyanide

Contents

Production

Chemical properties

See also

References

Identifiers

CAS Number	557-19-7^Y tetrahydrate: 13477-95-7^Y
3D model (JSmol)	Interactive image tetrahydrate: Interactive image
ChemSpider	10711^Y
ECHA InfoCard	100.008.329
EC Number	209-160-8
PubChem CID	11184 tetrahydrate: 71317429
UNII	YX45CR8P6A
UN number	1653
CompTox Dashboard (EPA)	DTXSID60971065
InChI InChI=1S/2CN.Ni/c21-2;/q2-1;+2 Key: NLEUXPOVZGDKJI-UHFFFAOYSA-N
SMILES [C-]#N.[C-]#N.[Ni+2] tetrahydrate: [C-]#N.[C-]#N.O.O.O.O.[Ni+2]
Properties
Chemical formula	Ni(CN)₂
Molar mass	110.729
Appearance	yellow-brown solid (dry) blue gray solid (tetrahydrate)^[1]
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H317, H334, H350, H372, H410
Precautionary statements	P201, P202, P260, P261, P264, P270, P272, P273, P280, P281, P285, P302+P352, P304+P341, P308+P313, P314, P321, P333+P313, P342+P311, 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