A Silylene‐Stabilized Germanium Analogue of Alkynylaluminum
Ming Chen, Binglin Lei, Xuyang Wang, Rong Hua, Haibin Song, Zhenbo Mo
Abstract
Abstract In contrast to the well‐developed metal acetylides, the heavier analogues of the type REEM (E=Si, Ge, Sn, Pb; M=metals) have not been reported to date. Herein, we describe the synthesis of a silylene‐stabilized germanium analogue of alkynylaluminum ( 4 ) by the reaction of a silylene‐stabilized digermavinylidene ( 3 ) with 0.25 equiv of (AlCp*) 4 in THF at 80 °C. The structure of 4 has been unambiguously characterized by spectroscopic analysis, X‐ray diffraction analyses and DFT calculations, and features a linear AlGeGe skeleton with a Ge=Ge double bond and a polarized Ge−Al bond. Complex 4 shows excellent reactivity towards small molecules such as H 2 , CS 2 and TolNCO, and this allows for the construction of the structurally intriguing germylenyl aluminum complex ( 5 ) and the germacycles ( 6 , 7 ).