Diplatinum Complexes with Bridging Silyl Ligands. Si−H Bond Activation of μ-Silyl Ligand Leading to a New Platinum Complex with Bridging Silylene and Silane Ligands
Diplatinum Complexes with Bridging Silyl Ligands. Si−H Bond Activation of μ-Silyl Ligand Leading to a New Platinum Complex with Bridging Silylene and Silane Ligands
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DOI：
10.1021/om060930c
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发表时间：
2007-01
期刊：
影响因子：
2.8
通讯作者：
M. Tanabe;D. Ito;K. Osakada
中科院分区：
文献类型：
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作者：
M. Tanabe;D. Ito;K. Osakada
具有桥连二乙基甲硅烷基配体的双铂络合物[{Pt（PCy 3）}2（μ-m2-HSiEt 2）2]（1）与过量的H2SiPh 2反应，通过桥连SiHEt 2配体与SiHPh 2基团的交换产生[{Pt（PCy 3）}2（μ-m2-HSiPh 2）2]（2）。H_2SiPh_2与1的等摩尔反应得到双核配合物[{Pt（PCy_3）}_2（μ-η_2：η_2-H_2SiEt_2）（μ-η_2-HSiPh_2）]（3）和[{Pt（PCy_3）}_2（μ-η_2：η_2-H_2SiEt_2）（μ-SiPh_2）]（4）的混合物。4的X射线晶体结构测定显示H2SiEt 2配体通过两个Pt−H−Si三中心双电子键与两个Pt中心桥接配位（Pt−Si = 2.375（8）和2.39（1）A）。
A diplatinum complex with bridging diethylsilyl ligands, [{Pt(PCy3)}2(μ-η2-HSiEt2)2] (1), reacted with an excess of H2SiPh2 to yield [{Pt(PCy3)}2(μ-η2-HSiPh2)2] (2) via exchange of the bridging SiHEt2 ligands with SiHPh2 groups. An equimolar reaction of H2SiPh2 with 1 afforded a mixture of the dinuclear complexes [{Pt(PCy3)}2(μ-η2-HSiEt2)(μ-η2-HSiPh2)] (3) and [{Pt(PCy3)}2(μ-η2:η2-H2SiEt2)(μ-SiPh2)] (4). X-ray crystallographic structure determination of 4 showed bridging coordination of the H2SiEt2 ligand to two Pt centers via two Pt−H−Si three-center two-electron bonds (Pt−Si = 2.375(8) and 2.39(1) A).