Abstract
2,4,6‐Tris(1‐diphenylphosphanyl‐1’‐ferrocenylene)‐1,3,5‐triazine (1) coordinates all three coinage metal(I) ions in a 1:1 tridentate coordination mode. The C3‐symmetric coordination in both solid state and solution is stabilised by an uncommon cation–π interaction between the triazine core and the metal cation. Intramolecular dynamic behaviour was observed by variable‐temperature NMR spectroscopy. The borane adduct of 1, 1BH3, displays four accessible oxidation states, suggesting complexes of 1 to be intriguing candidates for redox‐switchable catalysis. Complexes 1Cu, 1Ag, and 1Au display a more complicated electrochemical behaviour, and the electrochemical mechanism was studied by temperature‐resolved UV/Vis spectroelectrochemistry and chemical oxidation.
Highlights
2,4,6-Tris(1-diphenylphosphanyl-1’-ferrocenylene)-1,3,5-triazine (1) coordinates all three coinage metal(I) ions in a 1:1 tridentate coordination mode
Groups have found the most widespread use in this field, owing to their highly reversible redox processes, their structural flexibility, and their amenability to many different synthetic procedures.[4]. Combining both approaches and downsizing our recently reported redox-switchable dendritic ferrocenyl-based catalysts,[5] our present work aims to utilise the structurally appealing C3-symmetric 1,3,5-tris(ferrocenyl)arene platform[6] for the design of stimuli-responsive ligands
One trend in modern-day ligand design is to incorporate redox-switchable units into existing ligand frameworks or to design de novo potential ligands featuring such groups. This method has paved the way for redox-switchable catalysis (RSC).[2]
Summary
2,4,6-Tris(1-diphenylphosphanyl-1’-ferrocenylene)-1,3,5-triazine (1) coordinates all three coinage metal(I) ions in a 1:1 tridentate coordination mode.
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