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Oxidation of Copper(I) Hexaaza Macrocyclic Dinuclear Complexes

机译:六(I)六氮杂铜大环双核配合物的氧化

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摘要

DFT calculations give insight into the formation of peroxo intermediates 1-8 from a series of Cu(I) complexesbearing N-hexadentated macrocyclic dinucleating ligands, suffering an oxidation by their interaction withmolecular oxygen. The discussion is thus based on the side-on peroxo cores, omitting the case of complex 8for which the most favored structure is the trans-peroxo due to para substitution and the steric encumbranceproduced by the methylation of the aminic N atoms. The frontier molecular orbital theory explains deeply theO_2binding to the Cu(I) complexes, giving key relationships between the energy of particular orbitals thecopper complex before the O_2binding and the corresponding ones for free O_2. On other hand, toolssuch as the energy decomposition analysis and Mayer bond orders reveal the slight differences due to thedifferent types of ligands.
机译:DFT计算可洞察由一系列带有N-六齿大环双核配体的Cu(I)配合物形成的过氧中间体1-8的形成,这些配合物由于与分子氧的相互作用而受到氧化。因此,该讨论是基于侧过氧化物的核心,省略了配合物8的情况,对于该配合物,最优选的结构是由于对位取代和氨基N原子甲基化产生的空间位阻而形成的反式过氧化物。前沿分子轨道理论深刻地解释了O_2与Cu(I)配合物的结合,给出了O_2结合前的特定轨道铜配合物的能量与相应的游离O_2能量之间的关键关系。另一方面,诸如能量分解分析和迈耶键阶等工具揭示了由于配体类型不同而产生的细微差异。

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