Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States.
H. C. Brown Laboratory, Department of Chemistry, Purdue University , West Lafayette, Indiana 44555, United States.
J Am Chem Soc. 2017 Dec 20;139(50):18194-18197. doi: 10.1021/jacs.7b11465. Epub 2017 Dec 11.
Incorporation of two 9-borabicyclo[3.3.1]nonyl substituents within the secondary coordination sphere of a pincer-based Fe(II) complex provides Lewis acidic sites capable of binding 1 or 2 equiv of NH. Reduction of the 1:1 Fe:NH species affords a rare Fe(NH) complex in which the amido ligands are stabilized through interactions with the appended boranes. The NH units can be released as NH upon protonation and exchanged with exogenous NH.
在基于钳形的 Fe(II) 配合物的次级配位球内引入两个 9-硼双环[3.3.1]壬基取代基,提供了路易斯酸性位点,能够结合 1 或 2 当量的 NH。将 1:1 的 Fe:NH 物种还原得到一种罕见的 Fe(NH)配合物,其中酰胺配体通过与附加的硼烷相互作用而稳定。NH 单元可以在质子化时释放为 NH,并与外源性 NH 交换。