Chloro(dimethyl sulfide)gold(I)
| Chloro(dimethyl sulfide)gold(I) | ||
|---|---|---|
gold(I).png) | ||
gold(I)-from-xtal-1988-CM-3D-shiny-balls.png) | ||
| Identifiers | ||
| CAS number | 29892-37-3 | |
| Properties | ||
| Molecular formula | C2H6AuClS | |
| Molar mass | 294.55 g mol−1 | |
| Hazards | ||
| EU classification |  Xi | |
| R-phrases | R36/37/38 | |
| S-phrases | S26-S36 | |
| Related compounds | ||
| Related compounds | chloro(tetrahydrothiophene)gold(I) | |
 (verify) (what is: / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | ||
| 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
- ↑ P. G. Jones and J. Lautner (1988). "Chloro(dimethyl sulfide)gold(I)". Acta Cryst. C 44 (12): 2089–2091. doi:10.1107/S0108270188009151.
- ↑ Marie-Claude Brandys , Michael C. Jennings and Richard J. Puddephatt (2000). "Luminescent gold(I) macrocycles with diphosphine and 4,4-bipyridyl ligands". J. Chem. Soc., Dalton Trans. (24): 4601–4606. doi:10.1039/b005251p.
- ↑ Nishina, Naoko; Yamamoto, Yoshinori (2007). "Gold-Catalyzed Intermolecular Hydroamination of Allenes: First Example of the Use of an Aliphatic Amine in Hydroamination". Synlett 2007 (11): 1767. doi:10.1055/s-2007-984501.
- ↑ Hickey, James L.; Ruhayel, Rasha A.; Barnard, Peter J.; Baker, Murray V.; Berners-Price, Susan J.; Filipovska, Aleksandra (2008). "Mitochondria-Targeted Chemotherapeutics: The Rational Design of Gold(I)N-Heterocyclic Carbene Complexes That Are Selectively Toxic to Cancer Cells and Target Protein Selenols in Preference to Thiols". J. Am. Chem. Soc. 130 (38): 12570. doi:10.1021/ja804027j. PMID 18729360.
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