Two-coordinate, sp-hybridized aluminum and gallium cationic species (2a and 2b) were synthesized by the methyl group ion from the t-Bu 2 MeSi group by Et 3 Si+ followed by 1,2-silyl group migration from group 13 element to the cationic silicon center. X-ray crystal structure analyses confirmed these species to be free cations stabilized by hyperconjugation with a neighboring Si-Si σ bond.
双配位、sp 杂化的铝和
镓阳离子物质(2a 和 2b)由来自 t-Bu 2 MeSi 基团的甲基离子通过 Et 3 Si+ 合成,然后 1,2-甲
硅烷基基团从第 13 族元素迁移到阳离子
硅中心。X 射线晶体结构分析证实这些物质是通过与相邻 Si-Si σ 键超共轭稳定的游离阳离子。