A Dinucleating Ligand System with Varying Terminal Donors to Mimic Diiron Active Sites

Walleck S, Glaser T (2020)
Israel Journal of Chemistry 60(10/11): 1019-1031.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
To mimic dinuclear active sites of metalloproteins, we have developed a dinucleating ligand system consisting of two tetradentate tripodal ligand compartments with varying terminal donors (carboxylates, phenolates, and pyridines). These ligands provide access to a series of μ‐oxo‐bridged diferric complexes. The spectroscopic study allows to investigate the molecular structures even in solution, e. g. depending on protonation/deprotonation of coordinated OH− and H2O ligands or to observe a reversible pH‐dependent carboxylate‐shift between terminal and bridging binding mode. The electrochemical behavior is strongly influenced by the exogenous ligands, e. g. OH− facilitates oxidation to FeIV by 690 mV relative to Cl−. Using the terminal carboxylates and a {FeIII(μ‐O)2FeIII} core even allows oxidation with O2 to a high‐valent species with FeIV (S=2). The implications of this study for further generation of high‐valent or peroxo species and their utilization in catalysis is discussed.
Stichworte
Bioinorganic Chemistry; Diiron Complexes; UV-Vis-NIR Spectroscopy; Mossbauer spectroscopy; Electrochemical Characterization
Erscheinungsjahr
2020
Zeitschriftentitel
Israel Journal of Chemistry
Band
60
Ausgabe
10/11
Seite(n)
1019-1031
ISSN
0021-2148
eISSN
1869-5868
Page URI
https://pub.uni-bielefeld.de/record/2940701

Zitieren

Walleck S, Glaser T. A Dinucleating Ligand System with Varying Terminal Donors to Mimic Diiron Active Sites. Israel Journal of Chemistry. 2020;60(10/11):1019-1031.
Walleck, S., & Glaser, T. (2020). A Dinucleating Ligand System with Varying Terminal Donors to Mimic Diiron Active Sites. Israel Journal of Chemistry, 60(10/11), 1019-1031. doi:10.1002/ijch.201900097
Walleck, S., and Glaser, T. (2020). A Dinucleating Ligand System with Varying Terminal Donors to Mimic Diiron Active Sites. Israel Journal of Chemistry 60, 1019-1031.
Walleck, S., & Glaser, T., 2020. A Dinucleating Ligand System with Varying Terminal Donors to Mimic Diiron Active Sites. Israel Journal of Chemistry, 60(10/11), p 1019-1031.
S. Walleck and T. Glaser, “A Dinucleating Ligand System with Varying Terminal Donors to Mimic Diiron Active Sites”, Israel Journal of Chemistry, vol. 60, 2020, pp. 1019-1031.
Walleck, S., Glaser, T.: A Dinucleating Ligand System with Varying Terminal Donors to Mimic Diiron Active Sites. Israel Journal of Chemistry. 60, 1019-1031 (2020).
Walleck, Stephan, and Glaser, Thorsten. “A Dinucleating Ligand System with Varying Terminal Donors to Mimic Diiron Active Sites”. Israel Journal of Chemistry 60.10/11 (2020): 1019-1031.
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2020-11-17T12:27:18Z
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