Oxygen‐Atom Transfer between Mononuclear Nonheme Iron(IV)–Oxo and Iron(II) Complexes

Well-defined isosbestic pointswere observed at 570 and790 nm.The reaction was completewithin20minutes,andanincreaseintheconcentrationofthereactants diminished the reaction time (data not shown). Thelatter results indicate the reaction to be first order in each ofthe reactants. In contrast, the intermediate 2remained intactupon addition of [Fe(N4Py)]