Reactivity of bulky aminophosphanes towards small molecules: Activation of dihydrogen and carbon dioxide by aminophosphane/borane frustrated Lewis pairs
作者:Magdalena Siedzielnik、Kinga Kaniewska-Laskowska、Natalia Szynkiewicz、Jarosław Chojnacki、Rafał Grubba
DOI:10.1016/j.poly.2020.114930
日期:2021.1
atoms. According to DFT calculations, these compounds are highly nucleophilic, with nucleophilic centers located on the N and P atoms. Except for species containing a PPh2 moiety, the obtained aminophosphanes are air-stable and do not react with water. They form stable frustrated Lewis pairs with BPh3 or B(C6F5)3. Mono- and bisaminophosphanes in the presence of B(C6F5)3 activate dihydrogen and carbon
摘要通过X射线结构分析对结构式为R2NPR'R''和(R2N)2PR'(R = iPr,Cy; R'= Ph,Cy; R''= iPr)的一系列单氨基和双氨基膦进行了结构表征。 ,NMR光谱学和计算方法。这些物种的共同结构前途是短和极化的PN键,P原子处的金字塔形几何结构和N原子处的几乎平面的几何结构。根据DFT计算,这些化合物是高度亲核的,亲核中心位于N和P原子上。除含有PPh2部分的物质外,所得氨基膦烷对空气稳定,不与水反应。它们与BPh3或B(C6F5)3形成稳定的失意的Lewis对。在B(C6F5)3存在下,单氨基和双氨基膦在室温下会活化二氢和二氧化碳。