Synthesis of Homo- and Heterocyclic Silanes Via Intermediates with Si=Si Bonds (Report)
Pure and Applied Chemistry 2010, March
Kai Scheschkewitz, David Abersfelder
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INTRODUCTION Stable disilenes, i.e., compounds with kinetically or thermodynamically stabilized Si=Si bonds , have been intensely studied since the isolation of the first example by West, Michl, and Fink in 1981 . The development was driven by the fundamental interest in the Si=Si bond as well as its physical and chemical properties. As documented by X-ray diffraction studies, the Si=Si bond exhibits a high degree of conformational flexibility (Scheme 1) resulting in planar (I) , twisted (II) , trans-bent (III) , and slightly ds-bent conformations (IV) .