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Organoaluminum(iii) complexes of the bis-N,N′-(2,6-diisopropylphenyl)imidazolin-2-imine ligand

机译:双-N,N' - (2,6-二异丙基苯基)咪唑啉-2-亚胺配体的有机铝(III)复合物

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The reaction of trimethylaluminum with the bis- N , N ′-(2,6-diisopropylphenyl)imidazolin-2-imine (L–H) ligand 1 afforded several new organometallic aluminium complexes. Reaction in a 1?:?1 stoichiometry at room temperature afforded a Lewis acid–base adduct, whereas thermolysis resulted in the loss of methane and the formation of a dimer complex, (L-AlMe _(2) ) _(2) , 3 . When reacted in a 1?:?2 ratio at 110 °C, the loss of two equivalents of methane yielded L _(2) AlMe, 5 , whereas when the reaction was performed at 60 °C, (L–H)AlMe _(2) (L), 4 , was found as an intermediate in the reaction. Compound 2 is, to the best of our knowledge, the first example of a structurally characterized primary imine coordinated to a triorganoaluminum( III ) center. Attempts to form a two coordinate aluminum cation by CH _(3) ~(?) abstraction are documented. All products were characterized via normal spectroscopic techniques and single crystal X-ray diffraction.
机译:三甲基铝与双 - N,N'(2,6-二异丙基苯基)咪唑啉-2-亚胺(L-H)配体1的反应得到了几种新的有机金属铝配合物。在1中的反应?:1在室温下的化学计量提供Lewis酸碱加合物,而热解导致甲烷的损失和二聚体复合物的形成,(L- alme _(2))_(2), 3.当在110℃下反应1?2比率时,2当量的甲烷的损失产生L _(2)ALME,5,而当反应在60℃下进行时,(L-H)ALME _ (2)(1),4,作为反应中的中间体。据我们所知,化合物2是与三体铝(III)中心协调的结构表征的原发性亚胺的第一个例子。尝试通过CH _(3)〜(?)抽象形成两个坐标铝阳离子。通过正常光谱技术和单晶X射线衍射表征所有产品。

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