Tris [(trimethylsilyl)oxy] antimony

Michael Baier, Klaus Angermaier, Hubert Schmidbaur

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Tris[(trimethylsilyl)oxy]antimony (Sb(OSiMe3)3, 1) has been prepared from SbCl3 and 3 equiv. of LiOSiMe3 in diethylether. According to mass spectrometric and NMR spectroscopic data, 1 appears to be a monomer in solution and in the gas phase. Dimerisation occurs, however, in the solid state as verified by an X-ray crystal structure determination. The unit cell contains three crystallographically independent monomers, two of which form one type of dimer, while the other is part of a centrosymmetrical dimer. In both types of dimers two Sb atoms are connected via two OSiMe3 groups to form distorted Sb2O2-squares. Together with the remaining 4 OSiMe3 groups and the two stereochemically active lone pairs, each Sb exhibits a trigonal bipyramidal coordination.

Original languageEnglish
Pages (from-to)855-858
Number of pages4
JournalZeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
Issue number7
StatePublished - 1 Jul 1994
Externally publishedYes


  • Antimonites
  • Heterosiloxanes
  • Stibiosiloxanes


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