TY  - JOUR
AB  - 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.
DA  - 2020
DO  - 10.1002/ijch.201900097
KW  - Bioinorganic Chemistry
KW  - Diiron Complexes
KW  - UV-Vis-NIR Spectroscopy
KW  - Mossbauer spectroscopy
KW  - Electrochemical Characterization
LA  - eng
IS  - 10/11
M2  - 1019
PY  - 2020
SN  - 0021-2148
SP  - 1019-1031
T2  - Israel Journal of Chemistry
TI  - A Dinucleating Ligand System with Varying Terminal Donors to Mimic Diiron Active Sites
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-29407013
Y2  - 2024-11-22T10:25:09
ER  -