A one‐pot synthetic procedure yields the octanuclear Fe^III complex [Fe₈(µ₄‐O)₄(µ‐4‐tBu‐pz)₁₂Cl₄] (2). The molecular structure of 2 resembles the building units of iron‐containing minerals like magnetite, ferrihydrite and maghemite. Based on mechanistic investigation we propose that in presence of Et₃N, iron(III) pyrazolates are reduced to iron(II) pyrazolates, which then activate dioxygen to form 2. Complex 2 exhibits unique spectroscopic and electrochemical properties relative to those of the previously reported Fe₈ clusters based on pyrazolate ligands. Furthermore, 2 can oxidize water to hydrogen peroxide, thereby mimicking the water splitting process taking place at the surface of magnetite. Compound 2 therefore acts as both structural and functional models of iron‐containing minerals.

中文翻译：

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八核铁氧簇介导的水氧化反应

的单釜合成方法产生了octanuclear的Fe ^III复杂的[Fe ₈（μ ₄ -O）₄（μ - 4-吨卜-PZ）₁₂氯₄ ]（2）。的分子结构2个酷似含铁矿物质，如磁铁矿，水铁矿和磁赤铁矿的建筑物单元。基于机理研究，我们建议在Et ₃ N存在下，将吡唑铁（III）还原为吡唑铁（II），然后将双氧活化成2。复杂2相对于以前报道的基于吡唑酸酯配体的Fe ₈团簇，它们表现出独特的光谱和电化学性质。此外，2可以将水氧化成过氧化氢，从而模仿在磁铁矿表面发生的水分解过程。因此，化合物2既可以作为含铁矿物的结构模型，也可以作为功能模型。