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Published on: February 6, 2020
Disilanes with Pentacoordinate Si Atoms by Carbon Dioxide Insertion into Aminodisilanes: Syntheses, Molecular
Christopher Ryll1, Konstantin Kraushaar1, Jörg Wagler1
1Institut für Anorganische Chemie, Technische Universität Bergakademie Freiberg, Leipziger Strasse 29, 09599 Freiberg, Germany.
Abstract:
The insertion of carbon dioxide into the Si-N bonds of aminodisilanes ((RR'N) Me3- Si)2 affords carbamoyloxydisilanes ((RR'NC(O)O) Me3- Si)2. Some of the obtained insertion products feature pentacoordinate silicon atoms in the solid state and in solution, with two carbamoyloxy moieties bridging the Si-Si bond. The aminodisilanes and their insertion products were extensively analyzed, including single-crystal X-ray structure analyses. The temperature dependence of the higher coordination was investigated using variable temperature NMR experiments.
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