191403-49-3Relevant academic research and scientific papers
A tetraaryldigermene with a short germanium-germanium double bond and a nearly planar environment of both germanium atoms
Weidenbruch, Manfred,Stiirmann, Martin,Kilian, Hartmut,Fohl, Siegfried,Saak, Wolfgang
, p. 735 - 738 (1997)
Treatment of GeCl2 ·dioxane with the Grignard reagent RMgBr (R = 2-rBu-4,5.6-Me3C6H) furnishes the tetraaryldigermene R2Ge=GeR2 (8). X-ray structure-analysis of 8 reveals a short Ge=Ge double bond, a nearly planar environment of both germanium atoms and extremely widened C-Ge-C angles of 128°. In solution, 8 dissociates into two germylene molecules R2Ge: which can be trapped with oxygen or by [4 + 1] cycloaddition reactions with 1,4-dihetero1,3-dienes. A similar cycloadduct of a stannylene was obtained by thermolysis of (R′2Sn)3 (R′ = 2,4,6-JPr3C6H2), in the presence of a 1,4-diazabutadiene and characterized by an Xray structure-analysis. VCH Verlagsgesellschaft mbH.
