Structure, conformation, and UV absorption behavior of partially trimethylsilylated oligosilane chains

Andreas Wallner, Harald Wagner, Judith Baumgartner, Christoph Marschner, Henning W. Rohm, Martin Köckerling, Clemens Krempner

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

A number of new oligosilane chains containing linear segments with up to 18 silicon atoms were prepared. Employing salt elimination reactions of oligosilylpotassium compounds and oligosilylhalides, we prepared a number of tris(trimethylsilyl)silyl-terminated chains with varying internal segments consisting of dimethylsilylene and bis(trimethylsilyl)silylene units. Single-crystal X-ray diffraction and UV spectroscopic analysis indicate that the oligosilanes thus obtained are conformationally highly constrained due to steric interactions between trimethylsilyl groups. The chains consist of all-transoidoriented segments, capable of σ-bond electron delocalization, which are separated by cisoid turns.

Original languageEnglish
Pages (from-to)5221-5229
Number of pages9
JournalOrganometallics
Volume27
Issue number20
DOIs
StatePublished - Oct 27 2008

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