A masked amine building block is used to synthesize an organic cage that is exo-functionalized with one terpy group. Two exo-functionalized cages can be combined via iron-terpy coordination resulting in a cage dumbbell.
Heteroleptic Ligation by an
<i>endo</i>
‐Functionalized Cage
作者:Sarah C. Bete、Matthias Otte
DOI:10.1002/anie.202106341
日期:2021.8.16
coordinate to transition metals. Analysis of the iron(II) complex in solution and the solid state validates the structure and shows that no undesired but commonly observed dimerization process takes place. The solid-state structure shows a five-coordinate metal center with the carboxylate bidentately bound to iron, which makes Fe@2 an unprecedentedly detailed structural model complex for this kind of non-heme
提出了一种合成具有适当内功能化笼作为配体的准杂配配合物的概念方法。这里报道的笼配体具有共价有机性质,它是通过动态组合化学方法合成的,利用了掩蔽胺。受酶活性位点的启发,所描述的系统带有一个羧酸盐和两个咪唑部分作为独立的连接单元,通过它们能够与过渡金属配位。对溶液和固态中的铁 (II) 络合物的分析验证了结构,并表明没有发生不希望的但通常观察到的二聚化过程。固态结构显示了一个五配位金属中心,羧酸盐与铁双齿结合,这使得Fe@2这种非血红素铁加氧酶的前所未有的详细结构模型复合体。正如晶体结构所证实的那样,其他有机配体有足够的空间可用,因此实现了生物学相关的配体 α-酮戊二酸。我们观察到双氧的仿生反应行为,这开启了研究Fe@2作为功能模型复合物的研究。