Publications by authors named "Andreas Knoechl"

The aim of this study was the preparation of different amorphous silicon-carbon hybrid thin-layer materials according to the liquid phase deposition (LPD) process using single-source precursors. In our study, 2-methyl-2-silyltrisilane (methylisotetrasilane; ), 1,1,1-trimethyl-2,2-disilyltrisilane (trimethylsilylisotetrasilane; ), 2-phenyl-2-silyltrisilane (phenylisotetrasilane; ), and 1,1,2,2,4,4,5,5-octamethyl-3,3,6,6-tetrasilylcyclohexasilane (cyclohexasilane; ) were utilized as precursor materials and compared with the parent compound 2,2-disilyltrisilane (neopentasilane; ). Compounds - were successfully oligomerized at λ = 365 nm with catalytic amounts of the neopentasilane oligomer ().

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The formation of a stable triacylgermenolate as a decisive intermediate was achieved by using three pathways. The first two methods involve the reaction of KOBu or alternatively potassium with tetraacylgermane yielding via one electron transfer. The mechanism involves the formation of radical anions (shown by EPR).

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Sila-Peterson type reactions of the 1,4,4-tris(trimethylsilyl)-1-metallooctamethylcyclohexasilanes (MeSi)SiMe(SiMe)M (, M = Li; , M = K) with various ketones were investigated. The obtained products strongly depend on the nature of the ketone component. With 2-adamantanone afforded the moderately stable silene .

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