Gold(I) cyanide
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| Names | |
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| Other names
Gold monocyanide
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| Identifiers | |
3D model (
JSmol ) |
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| ChemSpider | |
ECHA InfoCard
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100.007.318 |
| EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| CAuN | |
| Molar mass | 222.985 g·mol−1 |
| Appearance | dark yellow powder[1] |
| Density | 7.12 g·cm−3[2] |
| insoluble | |
| Structure | |
| hexagonal | |
| P6mm (No. 183) | |
a = 340 pm, c = 509 pm[2]
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| Hazards | |
| GHS labelling:[3] | |
 
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| Danger | |
| H300, H310, H330, H410 | |
| Related compounds | |
Other cations
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Copper(I) cyanide Silver cyanide |
Related compounds
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Gold(III) cyanide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Gold(I) cyanide is the
dicyanoaurate is an intermediate in gold cyanidation, the extraction of gold from its ores.[5]
Preparation
Solid gold(I) cyanide precipitates upon reaction of potassium dicyanoaurate with hydrochloric acid:
![{\displaystyle \mathrm {K[Au(CN)_{2}]+HCl\longrightarrow AuCN+HCN+KCl} }](https://wikimedia.org/api/rest_v1/media/math/render/svg/e81b6be966b8e29d789be3d4b9831f8595943992)
It can also be produced by the reaction of gold(III) chloride and potassium cyanide.[2]
Reactions
The solid dissolves to form water-soluble adducts with a variety of ligands: cyanides,
hydrosulfide.[2]
Like most gold compounds, it converts to metallic gold upon heating.[citation needed]
Structure
Gold(I) cyanide's is a coordination polymer consisting of linear chains of AuCN such that each Au(I) center is bonded to carbon and nitrogen. The structure is hexagonal with the lattice parameters a = 3.40 Å and c = 5.09 Å.[2] T[6]
References
- ^ Sigma-Aldrich Co., product no. 254088.
- ^ a b c d e O. Glemser; O. Glemser, H. Sauer (1963). "Gold(I) Cyanide". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2pages=1064. NY, NY: Academic Press.
- ^ "C&L Inventory". echa.europa.eu. Retrieved 19 February 2022.
- ^ a b Meyers Konversations-Lexikon, 1888: Goldcyanid
- ISBN 978-3527306732.
- PMID 11670511.