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Self-assembled conjoined-cages.
Nature Communications ( IF 14.7 ) Pub Date : 2020-02-14 , DOI: 10.1038/s41467-020-14703-4
Sagarika Samantray 1 , Shobhana Krishnaswamy 1 , Dillip K Chand 1
Affiliation  

A self-assembled coordination cage usually possesses one well-defined three-dimensional (3D) cavity whereas infinite number of 3D-cavities are crafted in a designer metal-organic framework. Construction of a discrete coordination cage possessing multiple number of 3D-cavities is a challenging task. Here we report the peripheral decoration of a trinuclear [Pd3L6] core with one, two and three units of a [Pd2L4] entity for the preparation of multi-3D-cavity conjoined-cages of [Pd4(La)2(Lb)4], [Pd5(Lb)4(Lc)2] and [Pd6(Lc)6] formulations, respectively. Formation of the tetranuclear and pentanuclear complexes is attributed to the favorable integrative self-sorting of the participating components. Cage-fusion reactions and ligand-displacement-induced cage-to-cage transformation reactions are carried out using appropriately chosen ligand components and cages prepared in this work. The smaller [Pd2L4] cavity selectively binds one unit of NO3-, F-, Cl- or Br- while the larger [Pd3L6] cavity accommodates up to four DMSO molecules. Designing aspects of our conjoined-cages possess enough potential to inspire construction of exotic molecular architectures.

中文翻译:

自组装连体笼。

自组装的协调笼通常具有一个定义明确的三维(3D)腔,而无数个3D腔是在设计者金属有机框架中制作的。具有多个3D腔体的离散协调笼的构造是一项艰巨的任务。在这里,我们报告一个三核[Pd3L6]核的外围装饰,该核具有[Pd2L4]实体的一个,两个和三个单元,用于制备[Pd4(La)2(Lb)4]的多3D腔体结合笼。 ,[Pd5(Lb)4(Lc)2]和[Pd6(Lc)6]制剂。四核和五核复合物的形成归因于参与组分的有利的整体自分选。笼聚变反应和配体位移诱导笼到笼转化反应进行了使用在这项工作中制备适当选择配体组分和笼子。较小的[Pd2L4]腔可选择性地结合一个单元的NO3-,F-,Cl-或Br-,而较大的[Pd3L6]腔可容纳多达四个DMSO分子。我们的连接笼的设计方面具有足够的潜力来激发异国分子结构的构建。
更新日期:2020-02-14
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