Zinc cyanide

Zinc cyanide
Zinc cyanide
Are common
Systematic ; name	Zinc cyanide
Traditional names	Zinc cyanide
Chem. formula	Zn (CN) 2
Physical properties
condition	colorless crystals
Molar mass	117.42 g / mol
Density	1,852 g / cm³
Thermal properties
T. decomp.	800 ° C
Chemical properties
Solubility in water	0,0005 g / 100 ml
Classification
Reg. CAS number	557-21-1
PubChem
Reg. EINECS number
Smiles
Inchi
RTECS	ZH1575000
ChemSpider
Security
Toxicity	Highly toxic (T +)
NFPA 704	0 four 0

Zinc cyanide is an inorganic compound, a salt of zinc metal and hydrocyanic acid with the formula Zn (CN) ₂ , colorless crystals, insoluble in water.

Getting

Processing solutions of zinc salts with the stoichiometrically necessary amount of potassium cyanide :

{\mathsf {ZnCl_{2}+2KCN\ {\xrightarrow {}}\ Zn(CN)_{2}\downarrow +2KCl}}

{\ displaystyle {\ mathsf {ZnCl_ {2} + 2KCN \ {\ xrightarrow {}} \ Zn (CN) _ {2} \ downarrow + 2KCl}}}

{\mathsf {ZnCl_{2}+2KCN\ {\xrightarrow {}}\ Zn(CN)_{2}\downarrow +2KCl}}

Physical Properties

Zinc cyanide forms colorless crystals of cubic syngony , space group P 4 3m , cell parameters a = 0.589 nm, Z = 2.

Not soluble in water and ethanol .

Chemical Properties

It is dissolved in an excess of alkali metal cyanides :

{\mathsf {Zn(CN)_{2}+2KCN\ {\xrightarrow {}}\ K_{2}[Zn(CN)_{4}]}}

{\ displaystyle {\ mathsf {Zn (CN) _ {2} + 2KCN \ {\ xrightarrow {}} \ K_ {2} [Zn (CN) _ {4}]}}}

{\mathsf {Zn(CN)_{2}+2KCN\ {\xrightarrow {}}\ K_{2}[Zn(CN)_{4}]}}

Application

Zinc electroplating in aqueous solutions.
The catalyst in organic synthesis .

Literature

Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 2nd ed., rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
Ripan R., Chetyanu I. Inorganic chemistry. Chemistry of metals. - M .: Mir, 1972. - T. 2. - 871 p.