A ferrous complex Fe^IIL^OMeCl₂, 1, where L^OMe is 2‐methoxy‐N,N‐bis(pyridin‐2‐ylmethyl) aniline, has been synthesized and studies on its structure, spectral properties, and reactivity have been carried out. The complex has rich spectral properties and shows a well‐defined paramagnetic ¹H NMR spectrum with sharp and hyperfine shifted signals, which were assigned with the help of a combination of ¹H–¹H COSY and T1 and T2 relaxation time measurements. Though stable to air, complex 1 underwent oxidation in the presence of AgClO₄, which resulted in the formation of a symmetric diferric oxo complex [(L^OMeFe^IIICl)₂O](ClO₄)₂, 2. However, on reaction with strong oxidants such as tBuOOH, complex 1 yielded a mixture of an unsymmetric diferric oxo complex L^OMeFe^IIIClOFe^IIICl₃, 3, and a mononuclear ferric complex L^O–Fe^IIICl₂, 4, with a modified phenoxide ligand L^O–, which is formed as a result of the demethylation of L^OMe during oxidation. The factors affecting O‐demethylation were studied and a possible mechanistic pathway involving a high‐valent iron‐oxo species is proposed.

中文翻译：

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由四齿N配体与甲氧基苯基取代基稳定的亚铁配合物的试剂调节的氧化O-去甲基化作用

甲亚铁络合物的Fe ^II大号^OME氯₂，1，其中L ^OME为2-甲氧基Ñ，ñ -双（吡啶-2-基甲基）苯胺，已经合成和其结构，光谱性质和反应性研究已执行。该配合物具有丰富的光谱特性，并显示出清晰的顺磁性¹ H NMR光谱，具有尖锐和超精细的位移信号，这些信号是结合¹ H– ¹ H COZY和T 1和T 2弛豫时间测量而分配的。尽管对空气稳定，但复杂1后行氧化AgClO的存在下₄，这导致的对称二铁氧络合物[（L形成^OME的Fe ^III Cl）的₂ O]（CLO ₄）₂，2。然而，在与强氧化剂如反应吨BuOOH，复杂1产生非对称二铁氧络合物L的混合物^OME的Fe ^III ClOFe ^III氯₃，3，和单核铁络合物大号^O-的Fe ^III氯₂，4，用修饰的酚盐配体L^O-，是由于L ^OMe在氧化过程中脱甲基而形成的。研究了影响O-去甲基化的因素，并提出了涉及高价铁-氧代物种的可能机理。