Chapter 90. Octakis (Dimethylphosphinoethyl)octasila-Sesquioxane: Synthesis, Characterization and Reactivity

  1. Prof. Norbert Auner2 and
  2. Prof. Johann Weis3
  1. Sabine Lücke,
  2. Kai Lütke-Brochtrup and
  3. Karl Stoppek-Langner

Published Online: 28 APR 2008

DOI: 10.1002/9783527619917.ch90

Organosilicon Chemistry IV: From Molecules to Materials

Organosilicon Chemistry IV: From Molecules to Materials

How to Cite

Lücke, S., Lütke-Brochtrup, K. and Stoppek-Langner, K. (2000) Octakis (Dimethylphosphinoethyl)octasila-Sesquioxane: Synthesis, Characterization and Reactivity, in Organosilicon Chemistry IV: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619917.ch90

Editor Information

  1. 2

    Inst. für Anorganische Chemie, der Universität Frankfurt, Marie-Curie-Strasse 11, D-60439 Frankfurt am Main, Germany, Phone: 0 69/7 98-29180, -29591, Fax: 069/798-29188

  2. 3

    Wacker-Chemie GmbH, Geschäftsbereich S, Werk Burghausen, Johannes-Hess-Strasse 24, D-84489 Burghausen, Germany

Author Information

  1. Anorganisch-Chemisches Institut, Wesfalische Wilhelms-Universität Wilhelm Klemm-Str. 8, D-48149 Münster, Germany Tel.: Int. code + (251)833 6098 —Fax: Int. code + (251)833 6098

Publication History

  1. Published Online: 28 APR 2008
  2. Published Print: 17 JAN 2000

ISBN Information

Print ISBN: 9783527298549

Online ISBN: 9783527619917



  • silasesquioxanes;
  • complex ligands;
  • σ-donor


The addition of HPMe2 to the vinyl-T8 silasesqiuoxane quantitatively yields the novel octakis(dimethylphosphinoethyl)octasilasesquioxane 1 which can be converted quantitatively into the thio-derivative 2 via mild oxidation with sulfür in CS2. Reaction with W(CO)5THF gives the octatungsten derivative 3 as an interesting example for supermolecular transition metal complexes.