Zum Reaktionsverhalten des polycyclischen Oligoalumosiloxans [Ph2SiO]8[AlO(OH)]4 gegenüber Hexamethyldisilazan |
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| Authors: | Michael Veith Prof. Dr. Andreas Rammo Volker Huch Julia Biegler |
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| Affiliation: | 1. Saarbrücken, Institut für Anorganische Chemie der Universit?t des SaarlandesLeibniz‐Institut für Neue Materialien, Im Stadtwald, D‐66123 Saarbrücken;2. Saarbrücken, Institut für Anorganische Chemie der Universit?t des Saarlandes |
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| Abstract: | The Reaction Behaviour of the Polycylic Oligoalumosiloxane [Ph2SiO]8[AlO(OH)]4 towards Hexamethyldisilazane The reaction of the oligoalumosiloxane [Ph2SiO]8[AlO(OH)]4 ( 1 ) with hexamethyldisilazane leads to the triple ionic [Ph2SiO]8[AlO2]2[AlO(O‐SiMe3)]2[NH4·THF]2·2 THF ( 2 ) and in the presence of pyridine to [Ph2SiO]8[AlO1.5]4·2py·1.5 C7H8 ( 3 ). Apart from the usual characterization techniques (NMR and IR spectroscopy) the molecular structures of 2 and 3 have been determined by single‐X‐ray diffraction analyses. Both alumosiloxanes 2 and 3 present new types of molecular structures with a central four membered Al2O2‐ring, on which the further aluminium atoms are attached via oxygen atoms. This leads to an Al4‐lozenge, which is centered in subtriangles by oxygen atoms. |
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| Keywords: | Alumosiloxane Molecular alumosilicates Alumosiloxane derivatives Crystal structures Inorganic polycycles and cages |
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