Journal of the American Chemical Society, Vol.133, No.11, 3820-3823, 2011
Reactivity of a Pd(I)-Pd(I) Dimer with O-2: Monohapto Pd Superoxide and Dipalladium Peroxide in Equilibrium
The Pd(I)-Pd(I) dimer [((PNP)-P-F)Pd-](2) reacts with O-2 upon exposure to light to produce either the superoxide ((PNP)-P-F)PdO2 or the peroxide [((PNP)-P-F)PdO-] 2, which exist in equilibrium with free O-2. Both complexes contain square-planar Pd(II) centers. The unpaired electron density in ((PNP)-P-F)PdO2 is localized on the superoxide ligand.