Unprecedented redox-driven ligand ejection in nickel(II)-diiminosemiquinonate radical complexes.

@article{Leconte2014UnprecedentedRL,
  title={Unprecedented redox-driven ligand ejection in nickel(II)-diiminosemiquinonate radical complexes.},
  author={Nicolas Leconte and J{\'e}r{\'e}mie Ciccione and Gis{\`e}le Gellon and Christian Philouze and Florian Thomas},
  journal={Chemical communications},
  year={2014},
  volume={50 15},
  pages={1918-20}
}
Nickel(II) complexes of (M : L) stoichiometries 1 : 1 (1) and 1 : 2 (2) were prepared from a polydentate ligand involving diiminosemiquinonate radicals. Both were characterized by X-ray diffraction, Vis-NIR and EPR spectroscopy as well as electrochemistry. Ligand-centered oxidation of 1 promotes ligand ejection to give 2.