Bis(trimethylsilyl)mercury

Bis(trimethylsilyl)mercury is a chemical reagent with the formula (CH₃)₃-Si-Hg-Si-(CH₃)₃.

Bis(trimethylsilyl)mercury

Identifiers
CAS Number	4656-04-6
3D model (JSmol)	Interactive image
ChemSpider	21106419
EC Number	236-315-7
PubChem CID	83317
CompTox Dashboard (EPA)	DTXSID20196873
InChI InChI=1S/2C3H9Si.Hg/c2*1-4(2)3;/h2*1-3H3; Key: RKCQQCXHUWKHGR-UHFFFAOYSA-N InChI=1/2C3H9Si.Hg/c2*1-4(2)3;/h2*1-3H3;/rC6H18HgSi2/c1-8(2,3)7-9(4,5)6/h1-6H3 Key: RKCQQCXHUWKHGR-GMLBIIQIAA
SMILES C[Si](C)(C)[Hg][Si](C)(C)C
Properties
Chemical formula	C6H18HgSi2
Molar mass	346.972 g·mol^−1
Boiling point	104 °C (377 K)(dec.)
Hazards
GHS pictograms
GHS Signal word	Danger
GHS hazard statements	H300, H310, H330, H373, H400, H410
GHS precautionary statements	P260, P262, P264, P270, P271, P273, P280, P284, P301+310, P302+350, P304+340, P310, P314, P320, P321, P322, P330, P361, P363, P391, P403+233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
verify (what is  ?)
Infobox references

Synthesis

This compound was first synthesized by Wiberg et al. in 1963, by the reaction of trimethylsilyl bromide with sodium amalgam:[1]

2 Na + Hg + TMSBr → TMS₂Hg + 2 NaBr

Reactions

On prolonged heating at 100-160 °C, or when stood under light as an ethereal solution, it decomposes to hexamethyldisilane:[1]

TMS₂Hg → (CH₃)₃Si-Si(CH₃)₃ + Hg

Reaction with hydrogen chloride gives trimethylsilane and trimethylsilyl chloride:[1]

TMS₂Hg + HCl → TMSH + TMSCl + Hg

References

1. Wiberg, E.; Stecher, O.; Andrascheck, H. J.; Kreuzbichler, L.; Staude, E. (1963). "Recent Developments in the Chemistry of Metal Silyls of the Type M(SiR3)n". Angew. Chem. Int. Ed. Engl. 2 (9): 507. doi:10.1002/anie.196305071.

Further reading

• Pickett, Nl; Just, O; Vanderveer, Dg; Rees Ws, Jr (Apr 2000). "Reinvestigation of bis(trimethylsilyl)mercury". Acta Crystallographica C. 56 (4): 412–3. doi:10.1107/S0108270199016339. PMID 10815189.