Chloro(dimethyl sulfide)gold(I)

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Chloro(dimethyl sulfide)gold(I)
structural formula of the title molecule
ball-and-stick model of the molecule derived from the crystal structure
Identifiers
29892-37-3 YesY
Properties
C2H6AuClS
Molar mass 294.55 g·mol−1
Vapor pressure {{{value}}}
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).
YesY verify (what is YesYN ?)
Infobox references

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.

Structure

As for many other gold(I) complexes, the compound adopts a nearly linear (176.9°) geometry about the central gold centre. The Au-S bond distance is 2.271(2) Å, which is similar to other gold(I)-sulfur bonds.[1]

Preparation

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:

HAuCl4 + 2 SMe2 + H2O → Me2SAuCl + 3 HCl + OSMe2

Reactions

In chloro(dimethyl sulfide)gold(I), the dimethyl sulfide ligand is easily displaced by other ligands:

Me2SAuCl + L → LAuCl + Me2S (L = ligand)

Since Me2S is volatile, the new complex LAuCl is often easily purified.

When exposed to light and air, the compound decomposes to elemental gold.

References

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