Top Qs
Timeline
Chat
Perspective
Hexamethyldisilane
Chemical compound From Wikipedia, the free encyclopedia
Remove ads
Hexamethyldisilane (TMS2) is the organosilicon compound with the formula Si2(CH3)6, abbreviated Si2Me6. It is a colourless liquid, soluble in organic solvents.[1]
Remove ads
Synthesis and reactions
Hexamethyldisilane can be produced by Wurtz-like coupling of trimethylsilyl chloride in the presence of a reducing agent such as potassium graphite:
- 2 Me3SiCl + 2 K → Me3Si−SiMe3 + 2 KCl
With an excess of the reductant, the alkali metal silyl derivative is produced:[2]
- Me3Si−SiMe3 + 2 K → 2 Me3SiK
The Si-Si bond in hexamethyldisilane is cleaved by strong nucleophiles and electrophiles. Alkyl lithium compounds react as follows:
- Si2Me6 + RLi → RSiMe3 + LiSiMe3
Iodine gives trimethylsilyl iodide.[3]
- Me3Si−SiMe3 + I2 → 2 SiMe3I
Remove ads
References
Wikiwand - on
Seamless Wikipedia browsing. On steroids.
Remove ads