Chloro(dimethyl sulfide)gold(I)
CAS 29892-37-3
AuCl(SMe₂) is the most convenient gold(I) transfer reagent — the weakly bound dimethyl sulfide ligand displaces cleanly under mild conditions, making it the standard precursor to phosphine, NHC and thiolate gold(I) complexes.
Typical specification
| Molecular formula | AuCl·S(CH₃)₂ |
|---|---|
| Molecular weight | 294.55 |
| Assay | ≥ 98% |
| Gold content | ≥ 66.5% |
| Appearance | White to off-white crystalline powder |
| Solubility | Soluble in DCM, chloroform, THF |
| Storage | Sealed, dark, inert atmosphere |
| HS code (export) | 2843300000 |
Lot-specific COA issued with every shipment. SDS and ICP elemental impurity data available on request.
Where AuCl(SMe₂) is used
Gold(I) complex synthesis
The labile SMe₂ ligand is displaced by phosphines, N-heterocyclic carbenes and thiolates at room temperature, giving clean access to (L)AuCl catalysts and gold-thiolate materials without the handling problems of unstable AuCl.
Precursor for gold catalysis
The practical entry point to the (L)AuCl / AgX catalyst systems used in alkyne activation, hydroamination and cycloisomerization chemistry across methodology and process research.
Nanoparticle and materials chemistry
An organic-soluble, halide-defined gold source for monolayer-protected cluster synthesis and gold thin-film chemistry where aqueous chloroauric acid is unsuitable.
Storage and shipping
Storage. Store sealed, cool and dark under inert gas; light-sensitive. The dimethyl sulfide ligand is volatile — keep containers tightly closed.
Shipping. Ships in sealed glass with SDS; gold-compound export formalities confirmed per order.
Packaging. 1 g · 5 g · 25 g · 100 g
Synonyms
- Gold dimethyl sulfide chloride
- AuCl(SMe2)
- Dimethylsulfidegold(I) chloride
- (Me2S)AuCl
- Gold(I) chloride dimethyl sulfide complex
Frequently asked questions
Why use AuCl(SMe₂) instead of AuCl or HAuCl₄?
Anhydrous AuCl is thermally unstable and disproportionates; HAuCl₄ is Au(III) and deliquescent. The dimethyl sulfide adduct is a stable, weighable Au(I) solid whose ligand leaves quantitatively — the shortest route to defined gold(I) complexes.
How is pricing structured?
Quotes reference the day's gold price on assayed contained metal plus a stated conversion charge, lockable at order confirmation.
Are gold compounds harder to export?
Gold-bearing goods carry additional trade formalities in some lanes. We confirm the compliant routing and documentation per destination before accepting the order, so your shipment clears without surprises.
What documentation is included?
Every lot ships with a certificate of analysis stating assayed metal content, plus an English SDS. ICP trace-metal panels are available on request.