Hierarchical Assembly of an Interlocked M8 L16 Container.,Angewandte Chemie International Edition

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Hierarchical Assembly of an Interlocked M8 L16 Container.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-03-22 , DOI: 10.1002/anie.201800490
Witold M Bloch _{1,

2} , Julian J Holstein ₁ , Birger Dittrich ₃ , Wolf Hiller ₁ , Guido H Clever ₁

Affiliation

The self-assembly of eight PdII cations and sixteen phenanthrene-derived bridging ligands with 60° bite angles yielded a novel M8 L16 metallosupramolecular architecture composed of two interlocked D4h -symmetric barrel-shaped containers. Mass spectrometry, NMR spectroscopy, and X-ray analysis revealed this self-assembled structure to be a very large "Hopf link" catenane featuring channel-like cavities, which are occupied by NO3- anions. The importance of the anions as catenation templates became imminent when we observed the nitrate-triggered structural rearrangement of a mixture of M3 L6 and M4 L8 assemblies formed in the presence of BF4- anions into the same interlocked molecule. Furthermore, the densely packed structure of the M8 L16 catenane was exploited in the preparation of a hexyloxy-functionalized analogue, which further self-assembled into vesicle-like aggregates in a reversible manner.

中文翻译：

互锁 M8 L16 容器的分层组装。

8 个 PdII 阳离子和 16 个具有 60° 咬角的菲衍生桥配体的自组装产生了由两个互锁的 D4h 对称桶形容器组成的新型 M8 L16 金属超分子结构。质谱、核磁共振波谱和 X 射线分析表明，这种自组装结构是一个非常大的“Hopf link”索链，具有通道状空腔，被 NO3- 阴离子占据。当我们观察到在 BF4- 阴离子存在下形成的 M3 L6 和 M4 L8 组装体的混合物发生硝酸盐触发的结构重排，形成同一连锁分子时，阴离子作为连锁模板的重要性变得迫在眉睫。此外，M8 L16 索烯的致密结构被用于制备己氧基官能化类似物，该类似物进一步以可逆的方式自组装成囊泡状聚集体。

更新日期：2018-03-22

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