[Pt{4,4′-(NO2)2-bipy}Cl2]2–[4,4′-(NO2)2-bipy = 4,4′-dinitro-2,2′-bipyridine]: an EPR-active ‘18 electron’ platinum complex
Abstract
The complex [Pt{4,4′-(NO2)2-bipy}Cl2] undergoes four consecutive one-electron reductions, with a very small E1–E2 separation of 180 mV and both the mono- and di-reduction products can be electrochemically generated giving EPR-active solutions: thus [Pt{4,4′-(NO2)2-bipy}Cl2] has a nearly degenerate pair of predominantly ligand-based π* orbitals.