Wiley, Angewandte Chemie International Edition, 51(47), p. 9908-9912, 2008
Wiley, Angewandte Chemie, 51(120), p. 10056-10060, 2008
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(Figure presented) Head over EELS: Reaction of O2 with a hexa-iron(II)-substituted polyoxometalate in water yields a polyoxometalate with "end-on" hydroperoxo groups, {FeIII-O2H}, at the terminal positions. The hydroperoxo moiety, stabilized by hydrogen bonding with water, is unusual for its long O-O bond and nearly linear Fe-O-O bond angle. Electron energy-loss spectroscopy (EELS) is used to determine the oxidation state of iron.