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Chemical compound From Wikipedia, the free encyclopedia
Chloro(dimethyl sulfide)gold(I) is a coordination complex of gold. It is a white solid. This compound is a common entry point into gold chemistry.
Identifiers | |
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3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.156.209 |
PubChem CID |
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CompTox Dashboard (EPA) |
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Properties | |
C2H6AuClS | |
Molar mass | 294.55 g·mol−1 |
Hazards | |
GHS labelling: | |
Warning | |
H315, H319, H335 | |
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501 | |
Related compounds | |
Related compounds |
chloro(tetrahydrothiophene)gold(I) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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As for many other gold(I) complexes, the compound adopts a nearly linear (176.9°) geometry about the central gold atom. The Au-S bond distance is 2.271(2) Å, which is similar to other gold(I)-sulfur bonds.[1]
Chloro(dimethyl sulfide)gold(I) is commercially available. It may be prepared by dissolving gold in aqua regia (to give chloroauric acid), followed by addition of dimethyl sulfide.[2] Alternatively, sodium tetrachloroaurate may be used as the source of gold(III).[3] The bromo analog, Me2SAuBr, has also been synthesized by a similar route.[4] An approximate equation is:
A simple preparation starts from elemental gold in DMSO / conc HCl (1:2) where DMSO acts as an oxidant and the formed Me2S as ligand. As a side product, HAuCl4·2DMSO is formed.[5]
In chloro(dimethyl sulfide)gold(I), the dimethyl sulfide ligand is easily displaced by other ligands:[6]
Since Me2S is volatile, the new complex LAuCl is often easily purified.
When exposed to light, heat, or air, the compound decomposes to elemental gold.
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