1239486-78-2Relevant academic research and scientific papers
Synthesis of a pentasilapropellane. Exploring the nature of a stretched silicon-silicon bond in a nonclassical molecule
Nied, Dominik,Koeppe, Ralf,Klopper, Wim,Schnoeckel, Hansgeorg,Breher, Frank
, p. 10264 - 10265 (2010)
We report on the successful synthesis of Si5Mes6 (Mes = 2,4,6-trimethylphenyl), which consists of an archetypal [1.1.1] cluster core featuring two ligand-free, inverted tetrahedral bridgehead silicon atoms. The separation between the bridgehead Si atoms is much longer, and the bond strength much weaker, than usually observed for a regular Si-Si single bond. A detailed analysis of the electronic characteristics of Si 5Mes6 reveals a low-lying excited triplet state, indicative of some biradical(oid) character. Reactivity studies provide evidence for both closed-shell and radical-type reactivity, confirming the unusual nature of the stretched silicon-silicon bond in this nonclassical molecule.
