Wang Hao, Zhang Jiji, Lin Zhenyang, Xie Zuowei
Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China.
Chem Commun (Camb). 2015 Dec 7;51(94):16817-20. doi: 10.1039/c5cc06818e. Epub 2015 Oct 5.
A carbene-stabilized iminocarboranylboron(I) compound has been synthesized and structurally characterized. Single-crystal X-ray analyses and DFT calculations show that the π back donation of the lone pair of electrons on the boron(I) center onto the π* orbital of the imine unit is crucial for removing the electron density of the boron center thereby stabilizing such species, in which the carbene serves solely as a σ donor. This work also demonstrates that imines play a similar role to that of carbenes in the stabilization of low valent boron compounds.
一种卡宾稳定的亚氨基碳硼烷硼（I）化合物已被合成并进行了结构表征。单晶X射线分析和密度泛函理论计算表明，硼（I）中心孤对电子向亚胺单元的π*轨道的π反馈给电子作用对于去除硼中心的电子密度从而稳定此类物种至关重要，其中卡宾仅作为σ供体。这项工作还表明，亚胺在低价硼化合物的稳定化中起着与卡宾类似的作用。
