A Double-Walled Tetrahedron with AgI 4 Vertices Binds Different Guests in Distinct Sites.
A Double-Walled Tetrahedron with AgI 4 Vertices Binds Different Guests in Distinct Sites.
复制标题
具有 AgI 4 个顶点的双壁四面体将不同的客人绑定在不同的地点。
DOI：
10.1002/anie.202301612
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Clark SE
中科院分区：
文献类型：
--
作者：
Clark SE
在银(I)、2 -甲酰基- 1,8 -萘啶、卤化物和三对称三胺的溶液中组装的双壁四面体金属有机笼。每个ag4x簇在其顶点汇集了6个萘啶-亚胺基团，导致8个三配体以（ag4x） 4l8排列连接4个簇的结构。四个配体形成内层的四面体壁，外层的四个配体将其包围。笼具有显著的内部体积，并观察到结合阴离子来宾。该结构还具有外部结合裂缝，位于笼的边缘，用于束缚小芳香客人。与银簇结合的卤化物离子被观察到在一个明确的层次结构中交换，允许调制腔体积。本文揭示的原理可能允许越来越复杂的具有银簇顶点结构的笼，通过装配后调整内部腔体体积来实现目标结合行为。
A double‐walled tetrahedral metal‐organic cage assembled in solution from silver(I), 2‐formyl‐1,8‐naphthyridine, halide, and a threefold‐symmetric triamine. The AgI4X clusters at its vertices each bring together six naphthyridine‐imine moieties, leading to a structure in which eight tritopic ligands bridge four clusters in an (AgI4X)4L8arrangement. Four ligands form an inner set of tetrahedron walls that are surrounded by the outer four. The cage has significant interior volume, and was observed to bind anionic guests. The structure also possesses external binding clefts, located at the edges of the cage, which bound small aromatic guests. Halide ions bound to the silver clusters were observed to exchange in a well‐defined hierarchy, allowing modulation of the cavity volume. The principles uncovered here may allow for increasingly more sophisticated cages with silver‐cluster vertex architectures, with post‐assembly tuning of the interior cavity volume enabling targeted binding behavior.