Synthesis of di- and trisilanes with potentially chelating substituents |
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Authors: | Johannes Belzner,Uwe DehnertDirk Schä r,Bernhard RohdePeter Mü ller,Isabel Usó n |
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Affiliation: | a Institut für Organische Chemie der Georg-August-Universität Göttingen, Tammannstr. 2, D-37077 Göttingen, Germany b Institut für Anorganische Chemie der Georg-August-Universität Göttingen, Tammannstr. 4, D-37077 Göttingen, Germany |
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Abstract: | Silylenes 2 or 4, generated by thermolysis of cyclotrisilanes 1 and 3, were inserted into the SiCl or SiH bonds of monosilanes to yield a variety of disilanes, which can be further functionalized subsequently. In a few cases, trisilanes are accessible by the reaction of 1 with disilanes. The reaction of a metalated silane with a chlorosilane is an alternative method for the formation of SiSi bonds, which turned out to be especially useful for the synthesis of bulkily substituted disilanes. Some of the new dichlorodi- and trisilanes themselves serve as thermal precursors of silylenes 2 or 4, the extrusion of which can be catalyzed by 1 or 3 in certain cases. |
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Keywords: | Silylenes Oligosilanes Halosilanes Siliconsilicon bond formation |
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