A mono-oxo-bridged binuclear iron(iii) complex with a Fe–O–Fe angle of 180.0° and its catalytic activity for hydrogen evolution

Abstract

There are potential applications for binuclear oxo-bridged iron complexes in biological processes, catalysts, and magnetic materials, and the design of new bridged-iron complexes is important.

Bioinspired Diiron Complex with Proton Shuttling and Redox-Active Ligand for Electrocatalytic Hydrogen Evolution

“…This result deviates from reported bond angles for complexes having a Fe−O−Fe core which suggests that the bent Fe−O−Fe core is the intrinsic property of this complex. 40,45,46 The average Fe−O bond length of 1.7975 Å is consistent with the reported μ-oxo diiron complexes. 41,47,48 The Fe−Fe separation was observed to be 3.1121 Å.…”

“…The onset potential of catalysis is comparable to already reported bimetallic iron and cobalt complexes when investigated under similar conditions. 40,60 These combined results indicate that [Fe III −(μ-O)−Fe III ] is not getting regenerated in the catalytic cycle, implying the formation of an active catalyst after two-electron reduction. Notably, [Fe III −(μ-O)−Fe III ] displayed similar catalytic behavior in the presence of HDBU + (Figure 3b).…”

A closed-shell phenalenyl-based dinuclear iron(iii) complex as a robust cathode for a one-compartment H2O2 fuel cell

“…S14,† the binding energies (BEs) of Fe 2p 3/2 and Fe 2p 1/2 spin components were obtained in the regions of 711 and 723 eV, respectively, which is a typical characteristic of the Fe( iii ) center. 54,55…”

“…S14, † the binding energies (BEs) of Fe 2p 3/2 and Fe 2p 1/2 spin components were obtained in the regions of 711 and 723 eV, respectively, which is a typical characteristic of the Fe(III) center. 54,55 Electrocatalytic reduction of H 2 O 2 The CV in the absence of H 2 O 2 under identical conditions (Fig. 2, black curve) is provided for comparison.…”

Designing one-compartment H2O2 fuel cell using electroactive phenalenyl-based [Fe2(hnmh-PLY)3] complex as the cathode material

“…S5a †). 47,48 The paramagnetic behavior of complex 1 was studied with solid-state EPR analysis at room temperature. From previous reports, a characteristic broad signal for weakly coupled paramagnetic diiron(III) complexes is well known at room temperature.…”