Lawrence Berkeley National Laboratory
The remarkable influence of N,O-ligands in the assembly of a bis-calixarene-supported [MnMnMn] cluster.
- Author(s): Coletta, Marco
- Sanz, Sergio
- McCormick, Laura J
- Teat, Simon J
- Brechin, Euan K
- Dalgarno, Scott J
- et al.
Published Web Locationhttps://doi.org/10.1039/c7dt04233g
Calixarenes are versatile ligands, capable of supporting the formation of a wide variety of polymetallic clusters comprising 3d, 4f or 3d-4f metal ions. Calixarene-based metal ion fragments act as both bridging and structure capping moieties in these systems, and this behaviour is systematically extended upon moving to bis-calixarene, a relatively new ligand in which two calixarenes are tethered at the methylene bridge position. N,O-Ligands greatly influence cluster formation with bis-calixarene, affording a remarkable mixed-valence [MnMnMn] cluster that displays coordination chemistry typical of each ligand type, but also new structure capping behaviour for the latter.