A DFT study on the C-H oxidation reactivity of Fe(iv)-oxo species with N4/N5 ligands derived from l-proline.

A DFT study on the C-H oxidation reactivity of Fe(iv)-oxo species with N4/N5 ligands derived from l-proline.
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Fe(iv)-oxo 物质与 L-脯氨酸衍生的 N4/N5 配体的 C-H 氧化反应性的 DFT 研究

DOI:
10.1039/d0ra08496d
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发表时间:
2021-01-06
期刊:
影响因子:
3.9
通讯作者:
Sun W
Sun W
中科院分区:
化学3区
文献类型:
--
作者:
Lin J;Sun Q;Sun W

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用密度泛函理论(DFT)研究了由脯氨酸衍生的五齿配体(N5,Pro3Py)和四齿配体(N4,Pro2PyBn)的FeIVO配合物对正己烷的羟基化反应.理论结果预测,这两个FeIVO配合物持有三重基态。两种FeIVO物种的氢原子提取(HAA)过程通过两种状态的反应性进行,从而表明HAA通过低势垒五重态表面发生。除了传统的反弹步骤,解离路径也计算,并发现可能发生后HAA。用密度泛函理论(DFT)研究了由脯氨酸衍生的五齿配体(N5,Pro3Py)和四齿配体(N4,Pro2PyBn)的FeIVO配合物对正己烷的羟基化反应.
The hydroxylation of hexane by two FeIVO complexes bearing a pentadentate ligand (N5, Pro3Py) and a tetradentate ligand (N4, Pro2PyBn) derived from l-proline was studied by DFT calculations. Theoretical results predict that both FeIVO complexes hold triplet ground states. The hydrogen atom abstraction (HAA) processes by both FeIVO species proceed through a two-state reactivity, thus indicating that HAA occurs via a low-barrier quintet surface. Beyond the conventional rebound step, the dissociation path is also calculated and is found to potentially occur after HAA. The hydroxylation of hexane by two FeIVO complexes bearing a pentadentate ligand (N5, Pro3Py) and a tetradentate ligand (N4, Pro2PyBn) derived from l-proline was studied by DFT calculations.
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