Morphological Control of Heteroleptic cis- and trans-Pd2 L2 L'2 Cages.,Angewandte Chemie International Edition

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Morphological Control of Heteroleptic cis- and trans-Pd2 L2 L'2 Cages.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2017-05-23 , DOI: 10.1002/anie.201702573
Witold M Bloch ₁ , Julian J Holstein ₁ , Wolf Hiller ₁ , Guido H Clever ₁

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Control over the integrative self-sorting of metallo-supramolecular assemblies opens up possibilities for introducing increased complexity and function into a single self-assembled architecture. Herein, the relationship between the geometry of three ligand components and morphology of three self-sorted heteroleptic [Pd2 L2 L'2 ]4+ cages is examined. Pd-mediated assembly of two bis-monodentate pyridyl ligands with native bite angles of 75° and 120° affords a cis-[Pd2 L2 L'2 ]4+ cage while the same reaction with two ligands with bite angles of 75° and 60° gives an unprecedented, self-penetrating structural motif; a trans-[Pd2 (anti-L)2 L'2 ]4+ heteroleptic cage with a "doubly bridged figure eight" topology. Each heteroleptic assembly can be formed by cage-to-cage conversion of the homoleptic precursors and morphological control of [Pd2 L2 L'2 ] cages is achieved by selective ligand displacement transformations in a system of three ligands and at least six possible cage products.

中文翻译：

杂配顺式和反式 Pd2 L2 L'2 笼的形态控制。

对金属超分子组装体的综合自排序的控制为将增加的复杂性和功能引入单个自组装体系结构提供了可能性。在此，检查了三种配体组分的几何形状与三种自排序杂配[Pd2 L2 L'2 ] 4+ 笼的形态之间的关系。 Pd 介导的两个天然咬角为 75° 和 120° 的双单齿吡啶基配体的组装提供了顺式-[Pd2 L2 L'2 ]4+ 笼，而与咬角为 75° 和 60° 的两个配体的相同反应° 给出了前所未有的、自我渗透的结构主题；反式-[Pd2 (抗-L)2 L'2 ]4+杂配笼，具有“双桥八字形”拓扑。每个杂配组装体可以通过均配前体的笼到笼转化来形成，并且[Pd2 L2 L'2 ]笼的形态控制通过在三个配体和至少六种可能的笼产物的系统中的选择性配体置换转化来实现。

更新日期：2017-05-23

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