Gold Cyanide (III)

Gold cyanide
Gold cyanide
General
Systematic ; name	Gold Cyanide (III)
Traditional names	Cyanide gold
Chem. formula	Au (CN) 3
Physical properties
condition	hydrate - colorless crystals
Molar mass	275.02 g / mol
Thermal properties
T. decomp.	50 ° C
Chemical properties
Solubility in water	dissolves
Solubility in ethanol	dissolves
Diethyl Solubility	dissolves
Classification
Reg. CAS number	535-37-5
PubChem
Reg. EINECS number	208-614-2
Smiles
Inchi
ChemSpider
Security
Toxicity	Extremely toxic, SDYAV
NFPA 704	0 four 0

Gold (III) cyanide is an inorganic compound, a salt of gold and hydrocyanic acid with the formula Au (CN) ₃ , dissolves in water, forms crystalline hydrates - colorless crystals.

Content

1 Receiving
2 Physical properties
3 Chemical properties
4 Literature

Getting

Destruction of alkali metal tetracyanoaurates by hydrofluoric acid :

{\mathsf {2K[Au(CN)_{4}]+H_{2}[SiF_{6}]\ {\xrightarrow {}}\ 2Au(CN)_{3}+K_{2}[SiF_{6}]+2HCN}}

{\ displaystyle {\ mathsf {2K [Au (CN) _ {4}] + H_ {2} [SiF_ {6}] \ {\ xrightarrow {}} \ 2Au (CN) _ {3} + K_ {2} [SiF_ {6}] + 2HCN}}}

Physical Properties

Gold (III) cyanide forms crystalline hydrates of the composition Au (CN) ₃ • n H ₂ O, where n = 1,5, 3, and 6.

It is soluble in water, ethanol , diethyl ether .

Extremely poisonous.

Chemical Properties

Forms tetracyanoaurates with alkali metal cyanides

{\mathsf {Au(CN)_{3}+KCN\ {\xrightarrow {}}\ K[Au(CN)_{4}]}}

{\ displaystyle {\ mathsf {Au (CN) _ {3} + KCN \ {\ xrightarrow {}} \ K [Au (CN) _ {4}]}}}

When heated to 50 ° C, it decomposes with the release of gold cyanide (I) .

Literature

Chemical Encyclopedia / Editorial Board: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1990. - T. 2. - 671 p. - ISBN 5-82270-035-5 .
Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.