Synthesis and molecular structure of fluoro(triphosphanyl)silane and attempts to synthesize a silylidyne–phosphane
作者:Matthias Driess、Christian Monsé、Dieter Bläser、Roland Boese、Holger Bornemann、Arvid Kuhn、Wolfram Sander
DOI:10.1016/s0022-328x(03)00725-3
日期:2003.11
The synthesis, isolation, spectroscopic characterization (IR, multi-nuclear NMR) and single-crystal X-ray diffraction analysis of FSi(PH2)3 (1a), the first isolable fluorophosphanylsilane, is reported along with the gas phase decomposition of 1a, MeSi(PH2)3 (1b) and EtSi(PH2)3 (1c) under flash vacuum or pulsed pyrolysis conditions and matrix isolation of the products. The title compound is formed quantitatively
的合成,分离,光谱表征(IR,多核NMR)和FSI(PH的单晶X射线衍射分析2)3(1A),所述第一可分离fluorophosphanylsilane,与气相分解一起报告1a中,MeSi(PH 2)3(1b)和EtSi(PH 2)3(1c)在快速真空或脉冲热解条件下进行分离,并分离出产物。通过四膦酰基硅烷Si(PH 2)4的PH 2 / F-配体交换反应定量形成标题化合物在苯为溶剂中,二氟二芳基锡烷的摩尔比为1:1的是2 SnF 2(Is = 2,4,6-三异丙基苯基)。由于1a无法通过分步缩合从溶剂中分离出来,因此它的分离是通过制备GC进行的。单晶1a(三斜晶系,P通过在衍射仪上在175 K上通过微型化区域熔化和聚焦红外辐射原位结晶,生长出适合X射线衍射分析的1 ^)晶体。有趣的是,Si原子在F-Si-P角为120.4(7),110.4(7),106.3(1)°且法线为Si-F(1.60