Recognition Properties and Self‐assembly of Planar [M(2‐pyridyl‐1,2,3‐triazole)2]2+ Metallo‐ligands,Chemistry - An Asian Journal

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Recognition Properties and Self‐assembly of Planar [M(2‐pyridyl‐1,2,3‐triazole)2]2+ Metallo‐ligands
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2018-09-20 , DOI: 10.1002/asia.201801132
Dan Preston ₁ , James A. Findlay _{1,

2} , James D. Crowley _{1,

2}

Affiliation

Molecular recognition continues to be an area of keen interest for supramolecular chemists. The investigated [M(L)₂]²⁺ metallo‐ligands (M=Pd^II, Pt^II, L=2‐(1‐(pyridine‐4‐methyl)‐1 H‐1,2,3‐triazol‐4‐yl)pyridine) form a planar cationic panel with vacant pyridyl binding sites. They interact with planar neutral aromatic guests through π–π and/or metallophilic interactions. In some cases, the metallo‐ligands also interacted in the solid state with Ag^I either through coordination to the pendant pyridyl arms, or through metal–metal interactions, forming coordination polymers. We have therefore developed a system that reliably recognises a planar electron‐rich guest in solution and in the solid state, and shows the potential to link the resultant host–guest adducts into extended solid‐state structures. The facile synthesis and ready functionalisation of 2‐pyridyl‐1,2,3‐triazole ligands through copper(I)‐catalyzed azide–alkyne cycloaddition (CuAAC) “click” chemistry should allow for ready tuning of the electronic properties of adducts formed from these systems.

中文翻译：

平面[M（2-吡啶基1,2,3-三唑）2] 2+金属配体的识别特性和自组装

分子识别仍然是超分子化学家关注的领域。所研究的[M（大号）₂ ] ²⁺金属-配位体（M =钯^II，铂^II，大号= 2-（1-（吡啶-4-基-甲基）-1 ħ -1,2,3-三唑-4- -yl）吡啶）形成带有空吡啶基结合位点的平面阳离子板。它们通过π-π和/或亲金属相互作用与平面中性芳族客体相互作用。在某些情况下，金属配体还与Ag ^I固态相互作用通过配位到吡啶基侧链上，或者通过金属与金属的相互作用，形成配位聚合物。因此，我们开发了一种系统，该系统能够可靠地识别溶液中和固态的平面富电子客体，并显示出将最终的主体-客体加合物连接到扩展的固态结构中的潜力。通过铜（I）催化的叠氮化物-炔烃环加成（CuAAC）“咔嗒”化学反应可轻松合成2-吡啶基1,2,3-三唑配体，从而易于调节由这些系统。

更新日期：2018-09-20

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