NEWS ABOUT FOUR-MEMBERED RINGS IN THE CHEMISTRY OF ORGANOSILICON, -GERMANIUM, AND -TIN COMPOUNDS

Abstract

The synthesis of the cyclic tin-modified silanes 1–6 are described by the reaction of ^t Bu₂SnCl₂ with different dichloromono- and -disilanes in the presence of magnesium. Reacting dimethyldichlorosilane with diphenyldichlorosilane and magnesium yielded the 1,1-dimethylhexaphenylcyclotetrasilane 8 in reasonably good yields.

Keywords:

• Cyclotetrasilanes
• four-membered rings
• germanium
• silicon
• tin

We thank the Graz University of Technology (Austria), the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie (Germany) for financial support. Also, we are grateful to ASV-innovative Chemie GmbH (Bitterfeld) for placing chemicals at our disposal. We also thank Prof. Dr. K. Jurkschat (Dortmund University) for support.