Heavier Group 14 Congeners of Metalla-isobenzenes:Access to Metalla-isosilabenzene and Metalla-isogermabenzene by One-Pot Reactions  

作　　者：Jinyu Zhao Yapeng Cai Xin Yang Hong Zhang 

机构地区：[1]Department of Chemistry,Xiamen University,Xiamen,Fujian 361005,China

出　　处：《Chinese Journal of Chemistry》2024年第10期1121-1127,共7页中国化学（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.22171234).

摘　　要：Metalla-isosilabenzenes and metalla-isogermabenzenes have been successfully synthesized by the formal[5+1]-cycloaddition of diethynylsilane or diethynylgermane with simple metal complexes.This is the first example of a heavier Group 14 metalla-isobenzene isomer bearing a cumulative double bond motif within a metallacycle.These novel complexes were fully characterized by NMR spectroscopy and single-crystal X-ray diffraction analysis.The stabilization of the cyclic metal-vinylidene complexes has been analyzed using density functional theory(DFT)calculations.When the metalla-isosilabenzenes bearing Si—H bond were treated with the trityl salt as a hydride scavenger,the formation of silylium cation was observed spectroscopically.Both of metalla-isosilabenzenes and metalla-isogermabenzenes can readily undergo migratory insertion reactions to furnish siloles or germoles.

关 键 词：Metalla-isosilabenzene Metalla-isogermabenzene Density functional calculations Cycloaddition METALLACYCLES 

分 类 号：O62[理学—有机化学]