Reactions of the Si[8]O[20](SnMe[3])[8] with chloroalkylalanes and aluminum chloride-alkoxides


Zdeněk Moravec


Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno;
hugo@chemi.muni.cz


Cubic spherosilicate Si[8]O[20](SnMe[3])[8] is a valuable precursor for silica-based materials.
Terminal trimethyltin groups allow cross linking via tetralkyltin elimination reaction. The
structure of resulting materials could be controlled by molar ratio or reaction temperature.


In our work we investigated reactions of this building unit with alanes and aluminum alkoxides.
These reactions could lead to aluminosilicate materials. Products were characterized by solid and
liquid phase NMR and IR spectroscopy, byproducts were characterized by GC/MS.