A Stable Singlet Biradicaloid Siladicarbene: (L:)<sub>2</sub>Si
作者:Kartik Chandra Mondal、Herbert W. Roesky、Martin C. Schwarzer、Gernot Frenking、Benedikt Niepötter、Hilke Wolf、Regine Herbst-Irmer、Dietmar Stalke
DOI:10.1002/anie.201208307
日期:2013.3.4
A trapped silicon atom: The compound (L:)2Si with low‐valent silicon was synthesized from its dichloride biradical precursor (L:)2SiCl2 by reduction with KC8. Theoretical analysis suggest that there are two donor–acceptor σ bonds L:→Si←:L. There is one σ lone‐pair orbital at Si and one π orbital which features significant π‐back‐donation L:←Si→:L giving short SiC bonds.
捕获的硅原子:通过用KC 8还原由其二氯化物双自由基前体(L :) 2 SiCl 2合成具有低价硅的化合物(L :) 2 Si 。理论分析表明,存在两个供体-受体σ键L:→Si←:L。在Si处有一个σ孤对轨道,在一个π轨道上具有明显的π返给L:←Si→:L,给出了短的SiC键。