On some reactions of undecamethylcyclohexasilanyl-substituted silanes

A number of undecamethylcyclohexasilanyl-substitute silanes have been prepa red employing a salt elimination reaction between undecamethylcyclohexasila nyl potassium and several silyl halides or triflates. This method provides access to compounds with one or two undecamethylcyclohexasilanyl units atta ched to one silicon atom. Several attempts to introduce a third ring failed , resulting in formation of bis(undecamethylcyclohexasilanyl). An alternati ve approach to the substance class using silyl anions and undecamethylcyclo hexasilanyl bromide was also developed. The molecular structure of bis(undc camethylcyclohexasilanyl)methylsilane was determined by X-ray crystallograp hy, (C) 2000 Elsevier Science S.A. All rights reserved.