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

Chemistry, an Asian Journal
Dan PrestonJames D Crowley

Abstract

Molecular recognition continues to be an area of keen interest for supramolecular chemists. The investigated [M(L)2 ]2+ metallo-ligands (M=PdII , PtII , 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 AgI 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.

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Citations

Sep 5, 2019·Chemistry, an Asian Journal·Dan PrestonPaul E Kruger
May 5, 2020·ChemPlusChem·James E M Lewis, James D Crowley
Mar 28, 2020·Chemistry, an Asian Journal·Natalie R LagesseJames A Findlay

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