作者:Elisabeth Schwarz、Stefan K. Mueller、Gernot Weinberger、Ana Torvisco、Michaela Flock
DOI:10.1021/acs.organomet.8b00258
日期:2018.9.24
stabilization of diphosphastannylenes, such as substituent size, steric demand, and type of substituent (aryl, alkyl, silyl) were investigated via a comprehensive DFT and experimental investigation. The influence of various substituents (H, Me, tBu, Ph, TMS, Hyp = (Si(SiMe3)3)) on the pyramidalization of the phosphorus centers and cone angle determination of those substituents were carried out. Through these considerations
通过全面的DFT和实验研究,研究了影响二磷杂环丁烯撑稳定性的因素,例如取代基的大小,空间需求和取代基的类型(芳基,烷基,甲硅烷基)。进行了各种取代基(H,Me,t Bu,Ph,TMS,Hyp =(Si(SiMe 3)3))对磷中心锥体化的研究,并确定了这些取代基的锥角。通过这些考虑,确定了能够分离出稳定的Sn(II)物种的配体系统。合成的工作导致二聚体supermesityl的隔离(三甲基甲硅烷)phosphanides,2,4,6-三(吨丁基)苯基三甲基甲硅烷锂phosphanide,2,4,6-三(吨-丁基)苯基三甲基甲硅烷基磷化钾和一种高甲硅烷基磷化[HypP(SiMe 3)K·DME]。除此之外,还分离并通过实验和计算的NMR数据以及单晶X射线分析证实了新型的单体二磷撑亚戊二烯[HypP(SiMe 3)] 2 Sn。