From 0 to II in One‐Electron Steps: A Series of Ruthenium Complexes Supported by TropPPh
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作者:Xiuxiu Yang、Thomas L. Gianetti、Joshua Harbort、Michael D. Wörle、Lilin Tan、Cheng‐Yong Su、Pascal Jurt、Jeffrey R. Harmer、Hansjörg Grützmacher
DOI:10.1002/anie.201605687
日期:2016.9.19
We report the synthesis of a series of ruthenium complexes supported by the phosphine olefin ligand tropPPh2 (trop=5‐H‐dibenzo‐[a,d]cyclohepten‐5‐yl) in the oxidation states 0, +I, and +II, formed via successive one‐electron oxidization steps from Ru0(tropPPh2)2. The bidentate character of the tropPPh2 ligand and its steric hindrance force the complexes to adopt uncommon geometries, which were investigated
我们报告了由氧化烯烃配体tropPPh 2(trop = 5-H-dibenzo- [a,d] cyclohepten-5-yl)氧化态0,+ I和+ II支持的一系列钌配合物的合成,由Ru 0(tropPPh 2)2通过连续的单电子氧化步骤形成。tropPPh 2配体的双齿特征及其空间位阻迫使配合物采用不常见的几何形状,并通过X射线衍射分析对其进行了研究。单核Ru I配合物的EPR数据显示未配对的自旋与钌和两个磷核以及烯烃质子的偶联,表明该自旋主要位于Ru I中心。