Cobalt(II) cyanide

Cobalt(II) cyanide
Names
	IUPAC name Cobalt(II) cyanide
	Other names cobaltous cyanide
Identifiers
CAS Number	542-84-7 ; 20427-11-6 (dihydrate) ; 26292-31-9 (trihydrate) ;
3D model (JSmol)	Interactive image;
ChemSpider	61631 ;
ECHA InfoCard	100.008.028
PubChem CID	68336;
UNII	3300OC3VVZ ;
CompTox Dashboard (EPA)	DTXSID20969165 ;
	InChI InChI=1S/2CN.Co/c21-2;/q2-1;+2 Key: CWZOMTYLSNXUEL-UHFFFAOYSA-N ; InChI=1/2CN.Co/c21-2;/q2-1;+2 Key: CWZOMTYLSNXUEL-UHFFFAOYAR;
	SMILES [Co+2].[C-]#N.[C-]#N;
Properties
Chemical formula	Co(CN)2
Molar mass	110.968 g/mol (anhydrous) ; 147.00 g/mol (dihydrate) ; 165.02 g/mol (trihydrate)
Appearance	deep-blue powder ; hygroscopic (anhydrous) ; reddish-brown powder (dihydrate)
Density	1.872 g/cm3 (anhydrous)
Melting point	280 °C (536 °F; 553 K) (anhydrous)
Solubility in water	insoluble
Solubility	dihydrate ; degraded with dissolution by NaCN, KCN, NH4OH, HCl
Magnetic susceptibility (χ)	+3825·10−6 cm3/mol
Related compounds
Other anions	Cadmium chloride,; Cadmium iodide
Other cations	Zinc cyanide,; Calcium cyanide,; Magnesium cyanide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Cobalt(II) cyanide is the inorganic compound with the formula Co(CN)₂. It is coordination polymer that has attracted intermittent attention over many years in the area of inorganic synthesis and homogeneous catalysis.

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