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首页> 外文期刊>European journal of inorganic chemistry >Axial Ligand Effects of Ru-BDA Complexes in the O-O Bond Formation via the I2M Bimolecular Mechanism in Water Oxidation Catalysis
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Axial Ligand Effects of Ru-BDA Complexes in the O-O Bond Formation via the I2M Bimolecular Mechanism in Water Oxidation Catalysis

机译:通过I2M双分子机制在水氧化催化中的O-O键在O-O键形成中Ru-BDA复合物的轴向配体效应

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摘要

A detailed computational investigation of the mechanistic aspects of the water oxidation catalysis (WOC) for ruthenium-based catalysts [Ru(bda)(isoq)(2)] (H(2)bda = 2,2 '-bipyridine-6,6 '-dicarboxylic acid; isoq = isoquinoline). Density functional theory (DFT) calculations describe the kinetics by means of the energy barrier that leads to the O-O coupling, the rate-limiting step for WOC. To test the effect of the axial ligand environment, we investigated bda complexes with para-substituted isoquinolines, phthalazines and pyridines. Since previous screening analyses of the potential energy surface revealed a face to face orientation of metal-oxo species to be best for facilitating the O-O bond formation, this paper probes the deeper role of the axial ligands that saturate the Ru(bda) based complexes from a computational point of view.
机译:对基于钌的催化剂水氧化催化(WOC)的详细计算研究[Ru(BDA)(ISOQ)(2)](H(2)BDA = 2,2'-Bipyridine-6,6 ' - 羧酸; isoq =异喹啉)。 密度泛函理论(DFT)计算通过能量屏障来描述动力学,从而导致O-O耦合,WOC的速率限制步骤。 为了测试轴向配体环境的效果,我们研究了BDA复合物与替代异喹啉,酞嗪和吡啶。 由于潜在能量表面的先前筛选分析显示了金属 - 氧代物种的面对面取向,最好是促进OO键的形成,因此本文探讨了饱和ru(BDA)基于络合物的轴向配体的更深层次的作用 计算的观点。

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