6-Me3C6H) to the cryptodiborylcarbene (Me3Si)2C(BtBu)2C furnishes the stannaethene (Me3Si)2C(BtBu)2C=SnR″2 (10). The X-ray structure analysis of 10 reveals a strictly planar environment of the tricoordinated tin and carbon atoms and a slight twisting of the Sn=C double bond.
在隐二硼烷基卡宾(Me 3 Si)2 C(B t Bu)2 C中添加二芳基亚锡R''2 Sn(R''= 2 - t Bu-4,5,6-Me 3 C 6 H)提供了锡烷箱3的Si)2 C(乙吨丁基)2 C = SNR“ 2(10)。的X射线结构分析10揭示了tricoordinated锡和碳原子和SN = C双键的轻微扭曲的严格的平面环境。
A Heteroleptic (E)-1,2-Diaryl-1,2-disilyldistannene without Donor Stabilization
作者:Martin Stürmann、Wolfgang Saak、Karl W. Klinkhammer、Manfred Weidenbruch
The reaction of the stannylene R2Sn: (R = 2-tBu4,5,6-Me3C6H) with R'Sn-2 (R' = Si(SiMe3)(3)) proceeds with substituent exchange to afford the heteroleptic stannylene RR'Sn: which, in the solid state, forms the distannene RR'Sn = SnRR' (7). The X-ray structure analysis of 7 reveals a trans-bent arrangement of the substituents with a large fold angle of 44.9 degrees and an Sn-Sn double bond length of 279.14(4) pm.