Ferrocene-Based Tetradentate Schiff Bases as Supporting Ligands in Uranium Chemistry
datasetposted on 15.06.2015, 00:00 by Clément Camp, Lucile Chatelain, Victor Mougel, Jacques Pécaut, Marinella Mazzanti
Uranyl(VI), uranyl(V), and uranium(IV) complexes supported by ferrocene-based tetradentate Schiff-base ligands were synthesized, and their solid-state and solution structures were determined. The redox properties of all complexes were investigated by cyclic voltammetry. The bulky salfen-tBu2 allows the preparation of a stable uranyl(V) complex, while a stable U(IV) bis-ligand complex is obtained from the salt metathesis reaction between [UI4(OEt2)2] and K2salfen. The reduction of the [U(salfen)2] complex leads to an unprecedented intramolecular reductive coupling of the Schiff-base ligand resulting in a C–C bond between the two ferrocene-bound imino groups.