Cyclohexasilane

Chemical compound From Wikipedia, the free encyclopedia

Cyclohexasilane is a binary inorganic compound of silicon and hydrogen with the chemical formula Si6H12.[1][2][3]

Quick facts Names, Identifiers ...
Cyclohexasilane
Names
Other names
  • Hexasilabenzene
  • cyclo-Hexasilane
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.245.594 Edit this at Wikidata
EC Number
  • 813-812-2
  • InChI=1S/H12Si6/c1-2-4-6-5-3-1/h1-6H2
    Key: GCOJIFYUTTYXOF-UHFFFAOYSA-N
  • [SiH2]1[SiH2][SiH2][SiH2][SiH2][SiH2]1
Properties
H12Si6
Molar mass 180.606 g·mol−1
Appearance colorless liquid
Density g/cm3
Melting point 16.5 °C (61.7 °F; 289.6 K)
Boiling point 226 °C (439 °F; 499 K)
reacts with water
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis

Reaction of lithium tetrahydroaluminate and hexasilicon dodecachloride:[4][5]

Si6Cl12 + 3LiAlH4 → Si6H12 + 3LiCl + 3AlCl3

Also, pyrolysis of monosilane and disilane by heating at low pressure followed by fractional distillation.

Physical properties

Cyclohexasilane forms a colorless liquid that reacts with water.

The compound is soluble in ethanol and carbon disulfide.

Uses

Cyclohexasilane is an important precursor for the deposition of silicon layers from liquid silicon inks in the semiconductor industry.[6][7]

References

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