Calcium and Magnesium Bis(β-diketiminate) Complexes: Impact of the Alkylene Bridge on Schlenk-Type Rearrangements
作者:Philipp Rinke、Helmar Görls、Robert Kretschmer
DOI:10.1021/acs.inorgchem.1c00301
日期:2021.4.5
2-cyclohexylene, using calcium and magnesium precursors. Four mononuclear homoleptic calcium complexes were obtained, highlighting the pronounced tendency of calcium to undergo Schlenk-like redistributions. In the case of magnesium, however, the bridging group plays a crucial role, yielding seven dinuclear heteroleptic complexes but also one mononuclear and one dinuclear homoleptic complexes. In addition, a
双核杂多碱土金属络合物是有趣的合成靶标,因为两种金属的紧密接近允许协同作用。然而,这些复合物也易于经历Schlenk型重排,从而提供了活性较低的均化复合物。在这里,我们介绍具有柔性桥联基团的双(β-二酮亚胺)配体的金属化,即1,2-乙烯,1,3-丙烯和反式-1,2-亚环己基,使用钙和镁的前体。获得了四个单核均质钙络合物,突出了钙经历Schlenk样再分布的明显趋势。但是,在镁的情况下,桥联基团起着至关重要的作用,产生了7种双核杂配体,但也产生了1种单核和1种双核同配体。此外,还分离了三核混合的杂合的镁金属复合物,这是Schlenk平衡的中间产物很少见。