• Source: Hexamethyldisilane

Hexamethyldisilane (TMS2) is the organosilicon compound with the formula Si2(CH3)6, abbreviated Si2Me6. It is a colourless liquid, soluble in organic solvents.




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:

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.

Me3Si−SiMe3 + I2 → 2 SiMe3I




References

Kata Kunci Pencarian:

• Hexamethyldisilane
• Wurtz reaction
• Trimethylsilyl chloride
• Tetramethylsilane
• Organosilicon chemistry
• Trimethylsilyl iodide
• Acylsilane
• Disilane
• Bis(trimethylsilyl)mercury