118869-75-3Relevant academic research and scientific papers
Oxygenation Patterns for Iron(II) Porphyrins. Peroxo and Ferryl (FeIVO) Intermediates Detected by 1H Nuclear Magnetic Resonance Spectroscopy during the Oxygenation of (Tetramesitylporphyrin)iron(II)
Balch, Alan L.,Chan, Yee-Wai,Cheng, Ru-Jen,Mar, Gerd N. La,Latos-Grazynski, Lechoslaw,Renner, Mark W.
, p. 7779 - 7785 (1984)
The reaction between unligated (tetramesitylporphyrin)iron(II) (TMPFeII) and dioxygen in a toluene solution has been examined by 1H NMR spectroscopy.At -70 deg C, TMPFeII reacts with O2 to yield TMPFeIIIOOFeIIITMP that has spectroscopic properties similar to those of other peroxo-bridged complexes.On warming, TMPFeIIIOOFeIIITMP decomposes to yield a second intermediate (identified as TMPFeIVO) and TMPFeIIIOH, the final, stable product.TMPFeIIIOOFeIIITMP reacts with N-methylimidazole (N-MeIm) to produce (N-MeIm)TMPFeO2 and (N-MeIm)2TMPFeII.The former has been independently prepared from (N-MeIm)2TMPFeII and dioxygen at -50 deg C. TMPFeIVO reacts with N-MeIm to form (N-MeIm)TMPFeIVO that has been identified by comparison with other FeIVO complexes.TMPFeIVO reacts with triphenylphosphine at -50 deg C to yield triphenylphosphine oxide while TMPFeIIIOOFeIIITMP is unreactive toward triphenylphosphine under these conditions.TMPFeII is a catalyst for the oxidation of triphenylphosphine by dioxygen. 1H NMR spectra and resonance assignments for each species are described.
