In today's world, Gold(I) sulfide has become a topic of great relevance and interest to a wide range of people. From its origin to its impact on society, Gold(I) sulfide has sparked debates and reflections in different areas. In this article, we will explore the many facets of Gold(I) sulfide, analyzing its evolution over time, its implications in everyday life, and its relevance in various contexts. Whether Gold(I) sulfide is a person, a phenomenon, a historical event or any other topic, its study and understanding are essential to better understand the world in which we live.
Names | |
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IUPAC name
Gold(I) sulfide
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Other names
Aurous sulfide
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.013.749 |
EC Number |
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PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
Au2S | |
Molar mass | 425.998 g/mol |
Density | 11 g/cm3 |
Melting point | 240 °C (464 °F; 513 K) |
Insoluble | |
Related compounds | |
Other anions
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Copper(I) sulfide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
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Gold(I) sulfide is the inorganic compound with the formula Au2S. It is the principal sulfide of gold. It decomposes to gold metal and elemental sulfur, illustrating the "nobility" of gold.
The compound crystallizes in the motif seen for cuprous oxide: gold is 2-coordinate, sulfur 4-coordinate, and the S-Au-S linkage is linear. Linear coordination geometry is typical of gold(I) compounds, e.g. the coordination complex chloro(dimethyl sulfide)gold(I). The structure is similar to the α form of silver sulfide (argentite), which only exists at high temperatures.
It can be prepared by treating gold chloride with hydrogen sulfide It also arises by sulfiding dicyanoaurate:
This product is described as "initially dark reddish-brown" solid that turns "steel-gray".