Fig. 6: Protonation of [(susan6-Me){FeIII(μ-O)(μ-1,2-O2)FeIII}]2+ and spectroscopic characterization of the protonated complex [(susan6-Me){FeIII(μ-O)(μ-1,2-OOH)FeIII}]3+. | Nature Communications

Fig. 6: Protonation of [(susan6-Me){FeIII(μ-O)(μ-1,2-O2)FeIII}]2+ and spectroscopic characterization of the protonated complex [(susan6-Me){FeIII(μ-O)(μ-1,2-OOH)FeIII}]3+.

From: Generation of a μ-1,2-hydroperoxo FeIIIFeIII and a μ-1,2-peroxo FeIVFeIII Complex

Fig. 6

a UV-Vis spectroscopic characterization of protonation and deprotonation of [(susan6-Me){FeIII(μ-O)(μ-1,2-O2)FeIII}]2+ in CH3CN/CH2Cl2 (1:2) at −60 °C (c = 0.77 mM). b Selected time traces for the protonation/deprotonation in a. c Job-plot analysis at 15,400 cm−1 of the protonation in a. d 57Fe Mössbauer spectrum of a frozen solution of [(susan6-Me){FeIII(μ-O)(μ-1,2-OOH)FeIII}]3+ at 80 K generated by treating [(susan6-Me){FeIII(μ-O)(μ-1,2-O2)FeIII}]2+ with 1.5 equivalents HClO4 in CH3CN at −40 °C. The solid lines are simulations with parameters provided in Table 1.

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