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Issue 46, 2016
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Efficient molecular ruthenium catalysts containing anionic ligands for water oxidation

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Abstract

Two new mononuclear Ru complexes RuII(bipa)(pic)3 (1; H2bipa = 6-(1H-benzo[d]imidazol-2-yl)picolinic acid, pic = 4-picoline) and RuII(pbic)(pic)3 (2; H2pbic = 2-(pyridin-2-yl)-1H-benzo[d]imidazole-7-carboxylic acid, pic = 4-picoline) based on anionic ligands were successfully synthesized, and characterized using NMR spectroscopy, mass spectrometry, and X-ray crystallography. These catalysts showed high activities and stabilities in water oxidation in homogeneous systems with a high turnover number of 2100 and a turnover frequency of 0.21 s−1 for complex 1. The O–O band formation mechanism involved water nucleophilic attack. An active catalytic intermediate, i.e., RuIV–OH, was detected using high-resolution mass spectrometry.

Graphical abstract: Efficient molecular ruthenium catalysts containing anionic ligands for water oxidation

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Publication details

The article was received on 23 May 2016, accepted on 08 Jul 2016 and first published on 11 Jul 2016


Article type: Paper
DOI: 10.1039/C6DT02056A
Citation: Dalton Trans., 2016,45, 18459-18464
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    Efficient molecular ruthenium catalysts containing anionic ligands for water oxidation

    Z. Lu, Y. Gao, H. Chen, Z. Liu, L. Chen and L. Sun, Dalton Trans., 2016, 45, 18459
    DOI: 10.1039/C6DT02056A

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