[Zurück]

R. Fischer, J. Baumgartner, K. Hassler, G. Kickelbick:
"Syntheses and Properties of Novel Cage-Shaped Molecules Containing an Extended Silicon Backbone";
in: "Organosilicon Chemistry V - From Molecules to Materials", N. Auner, J. Weis (Hrg.); Wiley-VCH, Weinheim, 2003, ISBN: 3-527-30670-6, S. 294 - 298.

When branched hexabromoheptasilanes are reacted with divalent nucleophiles such as H₂O, H₂S, NH₃ or MeNH₂, cage structures analogous to that of adamantane are obtained in almost quantitative yields. The reduction of hexabromoheptasilanes with bulkier terminal tert-butyl groups affords heptasilanortricyclenes, which have a molecular geometry often met in group 15 chemistry. The structures of these compounds were determined by NMR spectroscopy and X-ray crystallography. Structural features were further investigated by means of ab-intio calculations.

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