spectroscopic measurements. The synthetic route to these complexes is analogous to that employed for the previously reported dimethylsilyl compounds Cp*(Me3P)2OsSiMe2X (X = Cl (4), OTf (5)). Complexes 2−5 were converted to the corresponding base-free silylene complexes [Cp*(Me3P)2OsSiR2][B(C6F5)4] (R = Me (6), iPr (7)) by anion metathesis with Li[B(C6F5)4]·3Et2O. Both 6 and 7 were characterized by multinuclear
Cp *(Me 3 P)2 OSCH 2 SiMe 3(1,Cp * = C 5 Me 5)与过量的i Pr 2 Si(H)Cl反应生成Cp *(Me 3 P)2 OSSi i Pr 2 Cl(2)的收率好,没有形成OS(IV)产物。的治疗2与我3 SiOTf(OTF =
三氟甲磺酸酯,OSO 2 CF 3),得到相应的triflatOSilyl复杂的Cp *(ME 3 P)2 OSSI我
镨2 OTf(3),看起来具有实质的亚甲
硅烷基特征,通过结构和光谱测量确定。这些络合物的合成途径类似于先前报道的二甲基甲
硅烷基化合物Cp *(Me 3 P)2 OSSiMe 2 X(X = Cl(4),OTf(5))。配合物2 - 5转化成相应的游离碱,亚甲
硅烷复合物的[Cp *(ME 3 P)2 O的SIR 2 ] [B(C 6 ˚F 5)4 ](R =我(6),我通过Li [B(C 6 F 5)4 ]·3Et