Bis(trimethylsilyl)mercury

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

Bis(trimethylsilyl)mercury
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 236-315-7
  • InChI=1S/2C3H9Si.Hg/c2*1-4(2)3;/h2*1-3H3; checkY
    Key: RKCQQCXHUWKHGR-UHFFFAOYSA-N checkY
  • 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
  • C[Si](C)(C)[Hg][Si](C)(C)C
Properties
C6H18HgSi2
Molar mass 346.972 g·mol−1
Boiling point 104 °C (377 K)(dec.)
Hazards
GHS labelling:
GHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
Danger
H300, H310, H330, H373, H410
P260, P262, P264, P270, P271, P273, P280, P284, P301+P310, P302+P350, P304+P340, P310, P314, P320, P321, P322, P330, P361, P363, P391, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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
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