Siliciumverbindungen mit starken intramolekularen sterischen Wechselwirkungen, XX [1] 1,1-Di-tert-butyl-2,2-dimesityldisilane: Synthese, Molekülstruktur, Radikale / Silicon Compounds with Strong Intramolecular Steric Interactions, XX [1] 1,1-Di-tert-butyl-2,2-dimesityldisilanes: Synthesis, Molecular Structure, Radicals

Abstract

The sterically congested disilanes tBu₂XSiSiXMes₂ [X = H (1), X = Cl (2)] have been prepared. An X-ray structure analysis of 1 reveals a preference for the anti-conformation in the solid state. Similar results have been obtained by empirical force field calculations and DNMR spectroscopy. Reaction of 2 with an electron rich olefin leads to a chlorine bridged disilanyl radical whereas treatment with alkali metals yields the corresponding disilenyl radical anion, tBu₂Si=SiMes₂˙̄.