Synthesis and structure of cyclic trinuclear zinc disiloxides

Clemens Krempner, Helmut Reinke, Katja Weichert

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The synthesis and structure of the new disilane-1,2-diol [(Me 3Si)2SiOH]2 (2b) and the trinuclear zinc disiloxides of the formula [Me2Si{(Me3Si)2SiO} 2]2Zn3Me2 (3a), [{(Me 3Si)2Si-O)2]2Zn3Me 2 (3b) and [E-{Me(Me3Si)3SiSiO} 2]2Zn3Me2 (3c) are reported. Compounds 3a-c were prepared by reactions of the corresponding silanedioles 2a-c with ZnMe2. The results of an X-ray structure analysis of 3b reveal an almost perfectly planar spirocyclic Zn3Q4 core with a square-planar geometry of the inner Zn2+ ion, whereas in 3a,c the inner zinc ions are distorted tetrahedral. Upon treatment with B(C 6F5)3, compounds 3b,c have been converted quantitatively into the complexes [{(Me3Si)2SiO} 2]2Zn3(C6F5)2 (4b) and [E-{Me(Me3Si)3SiSiO}2] 2Zn3(C6F5)2 (4c).

Original languageEnglish
Pages (from-to)1067-1071
Number of pages5
JournalEuropean Journal of Inorganic Chemistry
Issue number8
StatePublished - 2007


  • Clusters
  • Oligosilanes
  • Siloxides
  • Zinc


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