Unravelling the Mystery: Enlightenment of the Uncommon Electrochemistry of Naphthalene Monoimide [FeFe] Hydrogenase Mimics

Benndorf S, Hofmeister E, Waechtler M, Goerls H, Liebing P, Peneva K, Gräfe S, Kupfer S, Dietzek-Ivansic B, Weigand W (2022)

Publication Type: Journal article

Publication year: 2022

Journal

European Journal of Inorganic Chemistry Wiley-VCH Verlag

Book Volume: 2022

Article Number: e202100959

Journal Issue: 3

DOI: 10.1002/ejic.202100959

Abstract

[FeFe] hydrogenase mimicking complexes containing N-substituted naphthalene monoimide (NMI) of peri-substituted dichalcogenides as bridging ligands have been prepared and characterized using different spectroscopic as well as by X-ray diffraction methods. The redox behaviour has been investigated by cyclic voltammetry, IR and UV-Vis spectroelectrochemistry (IR and UV-Vis SEC), electron paramagnetic resonance (EPR) spectroscopy and quantum chemical simulations. IR SEC and EPR experiments combined with DFT calculations revealed the non-innocent character of the NMI bridging ligands. EPR spectroscopy was applied to study the singly and doubly reduced state. Chemical reduction with one equivalent of Cp*2Co revealed the formation of an organic radical with a g-value of 2.0028 at room temperature. When two equivalents of Cp*2Co were used to carry out the second reduction, no EPR signal could be detected anymore. IR SEC measurements indicate the formation of an EPR-silent dimeric structure after the second reduction.

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE) Leibniz-Institut für Photonische Technologien e.V. DE Germany (DE)

How to cite

APA:

Benndorf, S., Hofmeister, E., Waechtler, M., Goerls, H., Liebing, P., Peneva, K.,... Weigand, W. (2022). Unravelling the Mystery: Enlightenment of the Uncommon Electrochemistry of Naphthalene Monoimide [FeFe] Hydrogenase Mimics. European Journal of Inorganic Chemistry, 2022(3). https://doi.org/10.1002/ejic.202100959

MLA:

Benndorf, Stefan, et al. "Unravelling the Mystery: Enlightenment of the Uncommon Electrochemistry of Naphthalene Monoimide [FeFe] Hydrogenase Mimics." European Journal of Inorganic Chemistry 2022.3 (2022).

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