par Lavendomme, Roy 
Référence Building and Probing Small (1st: 2019: Brussels, Belgium)
Publication Non publié, 2019
Référence Building and Probing Small (1st: 2019: Brussels, Belgium)
Publication Non publié, 2019
Communication à un colloque
| Résumé : | Most supramolecular assemblies involving palladium(II) revolve around the use of two to four pyridyl-based ligands coordinated to the palladium center. As one of the rare exceptions, we recently described the self-assembly of anilines, 2,6-diformylpyridine and Pd(II) to form covalent macrocycles, (pseudo)rotaxanes and catenanes. The diiminopyridyl tridentate motif present in these assemblies binds Pd(II) while leaving one free coordination site which can accommodate a mono-dentate ligand. We have now reached a higher level of complexity with this tridentate motif and Pd(II) by assembling larger macrocycles, bridged macrocycles and tridimensional cages with a completely covalent backbone. Furthermore, we developed soft reduction conditions to reduce the imines and obtain, after demetalation, stable organic macrocycles and cages. Most supramolecular assemblies involving palladium(II) revolve around the use of two to four pyridyl-based ligands coordinated to the palladium center. As one of the rare exceptions, we recently described the self-assembly of anilines, 2,6-diformylpyridine and Pd(II) to form covalent macrocycles, (pseudo)rotaxanes and catenanes. The diiminopyridyl tridentate motif present in these assemblies binds Pd(II) while leaving one free coordination site which can accommodate a mono-dentate ligand. We have now reached a higher level of complexity with this tridentate motif and Pd(II) by assembling larger macrocycles, bridged macrocycles and tridimensional cages with a completely covalent backbone. Furthermore, we developed soft reduction conditions to reduce the imines and obtain, after demetalation, stable organic macrocycles and cages. |
