文摘
The formation of an FeIII–OOH species by reaction of complex 1 ([(MeN3Py)FeII(CH3CN)2]2+) with H2O2 at room temperature is reported and is studied by a combination of UV/vis absorption, EPR, and resonance Raman spectroscopies. The formation of the FeIII–OOH species, and its subsequent conversion to relatively inert FeIII–O–FeIII species, is shown to be highly dependent on the concentration of water, with excess water favoring the formation of the latter species, which is studied by UV/vis absorption spectroelectrochemistry also. The presence of acetic acid increases the rate and extent of oxidation of 1 to its iron(III) state and inhibits the wasteful decomposition of H2O2 but does not affect significantly the spectroscopic properties of the FeIII–OOH species formed.