文摘
Diiron(II) complexes, [Fe2(LPh4)(RCO2)]2+ (R = Ph3C or Ph), react with dioxygen to generate peroxodiiron(III) complexes [Fe2(LPh4)(RCO2)(O2)]2+. Their reactivities can be greatly controlled by the stereochemistry of the bridging carboxylates. Thermal decomposition of a peroxo complex with Ph3CCO2 resulted in regioselective hydroxylation of one of phenyl groups of the supporting ligand, which mimics toluene monooxygenase hydroxylase activity, whereas a peroxo complex with PhCO2 exhibited reversible deoxygenation.