The Crystal and Molecular Structure of the Symmetrical Silasesquioxane H 8 Si 8 O 12 at 100 K, a Molecular Building tslock of Some Zeolites

Author： Auf der Heyde Thomas P.E.   Bürgi Hans-Beat   Bürgy Heribert   Törnroos Karl W.  

Publisher： Swiss Chemical Society

ISSN： 0009-4293

Source： CHIMIA International Journal for Chemistry, Vol.45, Iss.1-2, 1991-01, pp. : 38-40

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Abstract

The crystal and molecular structure of the symmetrical octasilasesquioxane H8Si8Ol2 has been redetermined from three dimensional X-ray diffraction data. The H8Si8Ol2 molecule shows effective m3 (Th) symmetry. The molecular packing indicates intermolecular O…Si distances of ∼3.6 Å reminiscent of incipient nucleophilic attack of O on Si. The anisotropic displacement parameters indicate non-rigidity of the molecule.

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