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Recognition Properties and Self‐assembly of Planar [M(2‐pyridyl‐1,2,3‐triazole) 2 ] 2+ Metallo‐ligands
Author(s) -
Preston Dan,
Findlay James A.,
Crowley James D.
Publication year - 2019
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201801132
Subject(s) - supramolecular chemistry , chemistry , pyridine , cycloaddition , click chemistry , triazole , cationic polymerization , adduct , stereochemistry , metal , crystallography , alkyne , self assembly , solid state , combinatorial chemistry , polymer chemistry , catalysis , medicinal chemistry , organic chemistry , crystal structure
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.