PNP-Ligated Heterometallic Rare-Earth/Ruthenium Hydride Complexes Bearing Phosphinophenyl and Phosphinomethyl Bridging Ligands
作者:Wylie W. N. O、Xiaohui Kang、Yi Luo、Zhaomin Hou
DOI:10.1021/om401216v
日期:2014.2.24
reaction of rare-earth bis(alkyl) complexes containing a bis(phosphinophenyl)amido pincer (PNP), LnPNPiPr(CH2SiMe3)2 (1-Ln, Ln = Y, Ho, Dy), with ruthenium trihydride phosphine complexes, Ru(C5Me5)H3PPh3 and Ru(C5Me5)H3PPh2Me, gave the corresponding bimetallic Ln/Ru complexes bearing two hydride ligands and a bridging phosphinophenyl (μ-C6H4PPh2-κP:κC1, 2a-Ln) or a bridging phosphinomethyl ligand (μ-CH2PPh2-κP:κC
稀土类双(烷基)含有双(phosphinophenyl)酰氨基钳形(PNP),LnPNP络合物的反应我镨(CH 2森达3)2(1-LN,Ln为Y,何,DY),钌三氢化膦配合物,钌(C 5我5)H 3 PPH 3和Ru(C 5我5)H 3 PPH 2我,得到相应的双金属LN / Ru配合物带有两个氢化物配位体和一个桥连phosphinophenyl(μ-C 6 ħ 4 PPH 2 -κ P:κ ç 1,图2a-LN)或桥连配位体膦(μ-CH 2 PPH 2 -κ P:κ Ç,2B-LN),分别。的反应图2a-Y与CO气体在1个大气压和在20℃下在甲苯d 8,得到复合图3a-Y ,其带有一个桥接配位体pseudooxymethylene(μ-OCH(ø -C 6 ħ 4)PPH 2 -κ P:κ Ò)和在Y /钌中心桥接氢化物配位体。由DFT方法计算研究表明,3A-Y形成于两个步骤:CO的第一协调(Δ