| Names | |
|---|---|
| IUPAC name Gold(III) sulfide | |
| Other names Auric sulfide, Gold trisulfide, Digold trisulfide | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.013.750 |
| EC Number |
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| UNII | |
| |
| |
| Properties | |
| Au2S3 | |
| Molar mass | 490.11 g·mol−1 |
| Appearance | Black powder |
| Density | 8.750 g/cm3 |
| Insoluble | |
| Hazards | |
| GHS labelling: | |
 | |
| Warning | |
| H315,H319,H335 | |
| P261,P264,P271,P280,P302+P352,P304+P312,P304+P340,P305+P351+P338,P312,P321,P332+P313,P337+P313,P362,P403+P233,P405,P501 | |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Gold(III) sulfide orauric sulfide is aninorganic compound with the formulaAu2S3. Auric sulfide has been described as a black and amorphous solid.[1] Only the amorphous phase has been produced, and the only evidence of existence is based onthermal analysis.
Early investigations claimed to prepare auric sulfide by the reaction oflithiumtetrachloroaurate with hydrogen sulfide:
Similar preparations viachloroauric acid,auric chloride, orgold(III) sulfate a claimed proceed in anhydrous solvents, but water evinces aredox decomposition intometallic gold insulfuric acid:[2][3][1]
Conversely, it is claimed thatcyclo-octasulfur reduces gold(III) sulfate to a mixture of gold sulfides and sulfur oxides:[1]
Auric sulfide has also been claimed as the product whenauric acetate is sonicated withcyclo-octasulfur indecalin.[3]
Auric sulfide is claimed to react withnitric acid as wellsodium cyanide. It is claimed to dissolve in concentratedsodium sulfide solution.[1]