Török Patrik, Unjaroen Duenpen, Viktória Csendes Flóra, Giorgi Michel, Browne Wesley R, Kaizer József
Research Group of Bioorganic and Biocoordination Chemistry, University of Pannonia, H-8200 Veszprém, Hungary.
Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.
Dalton Trans. 2021 Jun 1;50(21):7181-7185. doi: 10.1039/d1dt01502h.
The complex [FeIII2(μ-O2)(L3)4(S)2]4+ (L3 = 2-(4-thiazolyl)benzimidazole, S = solvent) forms upon reaction of [FeII(L3)2] with H2O2 and is a functional model of peroxo-diiron intermediates invoked during the catalytic cycle of oxidoreductases. The spectroscopic properties of the complex are in line with those of complexes formed with N-donor ligands. [FeIII2(μ-O2)(L3)4(S)2]4+ shows both nucleophilic (aldehydes) and electrophilic (phenol, N,N-dimethylanilines) oxidative reactivity and unusually also electron transfer oxidation.
配合物[FeIII2(μ - O2)(L3)4(S)2]4+(L3 = 2 - (4 - 噻唑基)苯并咪唑,S = 溶剂)由[FeII(L3)2]与H2O2反应形成,是氧化还原酶催化循环中涉及的过氧 - 二铁中间体的功能模型。该配合物的光谱性质与由氮供体配体形成的配合物的光谱性质一致。[FeIII2(μ - O2)(L3)4(S)2]4+既表现出亲核(醛)和亲电(苯酚、N,N - 二甲基苯胺)氧化反应性,而且还表现出异常的电子转移氧化反应性。