Synthesis, Characterization, and Catalytic Activity of Dinuclear Rare-Earth Metal Alkyl Complexes Bearing 2,6-Diisopropylphenylamidomethyl Functionalized Pyrrolyl Ligand
作者:Xiancui Zhu、Dianjun Guo、Fangshi Yao、Zeming Huang、Yang Li、Zuowei Xie、Shaowu Wang
DOI:10.1021/acs.organomet.1c00097
日期:2021.6.14
raised to 45 °C, the centrosymmetric half-sandwich pyrrolyl rare-earth metal alkyl complexes (Me3SiCH2RELthf)2 (RE = Y (1b), Gd (2b), Yb (5b)) were obtained in good yields, unexpectedly. Further studies revealed that the sandwich pyrrolyl rare-earth metal dialkyl complexes can be transferred to the half-sandwich rare-earth metal isomers by heating the C6D6 solution to 60 °C. Single-crystal X-ray diffraction
一系列结构明确的阳离子稀土金属桥接夹心吡咯基稀土金属二烷基配合物,通式为 (Me 3 SiCH 2 ) 2 RE(μ- L) 2 RE(thf) 2 ( L = 2- ( 2,6 - i Pr 2 C 6 H 3 NCH 2 )C 4 H 3 N;RE = Y ( 1a ), Gd ( 2a ), Dy ( 3a ), Er ( 4a ), Yb ( 5a ), Lu ( 6a), thf = 四氢呋喃) 是通过稀土金属三烷基配合物 RE(CH 2 SiMe 3 ) 3 (thf) 2与 1 当量的 2-(2,6-二异丙基苯基氨基甲基)吡咯 (H 2 L )反应合成的甲苯在室温下。当反应温度升至45℃时,中心对称的半夹心吡咯基稀土金属烷基配合物(Me 3 SiCH 2 RE L thf)2(RE=Y(1b)、Gd(2b)、Yb(5b))) 以良好的产率获得,出乎意料。进一步的研究表明,通过将