https://www.selleckchem.com/pr....oducts/gw806742x.htm
The redox-active DPPn- ligand plays a crucial role in stabilizing this complex and in its facile conversion to the triplet THF adduct [Co II (DPP· 2- )(THF) 2 ] and closed-shell singlet pyridine and amine adducts [Co III (DPP 3- )(L) 2 ] (L = py, tBuNH2, or AdNH2). Coordination of the weak donor THF to [Co II (DPP· 2- )] changes the orbital overlap between the DPP· 2- ligand radical π-orbitals and the cobalt(II) metalloradical d-orbitals, which results in a spin-flip to the triplet ground state without changing the oxidation states of
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