1,5-Oligosilanylene Dianion as Building Block for Oligosiloxane Containing Cages, ansa-Ferrocenes and Cyclic Germylenes and Stannylenes

Rainer Zitz, Alexander Pöcheim, Judith Baumgartner, Christoph Marschner

Research output: Contribution to journalArticlepeer-review

Abstract

Starting out from dipotassium 1,5-oligosiloxanylene diide 2, a 3,7,10-trioxa-octasilabicyclo[3.3.3]undecane was prepared, which represents the third known example of this cage structure type. Reaction of 1,3-dichlorotetramethyldisiloxane with 1,1’-bis[bis(trimethylsilyl)potassiosilyl]ferrocene gave a ferrocenophane with a disiloxane containg bridge. The compound can be further derivatized by conversion into a 1,5-oligosilanyl diide. Reacting 1,5-oligosiloxanylene diide 2 with SnCl2 or GeCl2·dioxane in the presence of PMe3 gave cyclic disilylated tetrylene PMe3 adducts. Release of the base-free stannylene led to a dimerization process which gave a bicyclic distannene as the final product. Abstraction of the PMe3 from the cyclic disilylated germylene PMe3 adduct with B(C6F5)3 caused oxidative addition of the germylene into a para-C-F bond of Me3P·B(C6F5)3
Original languageEnglish
Article number1322
JournalMolecules
Volume25
Issue number6
DOIs
Publication statusPublished - 2020

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