Hexasilylbenzene, C6(SiH3)6

Christoph Rüdinger, Holger Beruda, Hubert Schmidbaur

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The title compound was obtained in a four‐step synthesis starting from (4‐methoxyphenyl)silane. Owing to the presence of activating p‐methoxy groups in the key intermediate hexakis[(4‐methoxyphenyl)silyl]benzene (4), the peripheral aryl groups can be cleaved selectively from the silicon atoms with trifluoromethanesulfonic acid, leaving the Si–C bonds to the central benzene ring intact. LiAlH4 reduction of the resulting hexakis[(trifluoromethylsulfonyloxy)silyl]benzene (5) finally leads to crystalline, sublimable, air‐stable C6(SiH3)6 (6), m.p. 165°C. In the crystals (triclinic, space group P1) the structure of the centrosymmetrical molecules approaches very closely point group D3d, as predicted from theoretical considerations.

Original languageEnglish
Pages (from-to)1401-1403
Number of pages3
JournalChemische Berichte
Issue number6
StatePublished - Jun 1992
Externally publishedYes


  • Benzene, hexasilyl‐


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