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Efficient molecular ruthenium catalysts containing anionic ligands for water oxidation
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2016 (English)In: DALTON TRANSACTIONS, ISSN 1477-9226, Vol. 45, no 46, p. 18459-18464Article in journal (Refereed) Published
Abstract [en]

Two new mononuclear Ru complexes RuII(bipa)(pic) 3 (1; H(2)bipa = 6-(1H-benzo[d] imidazol-2-yl) picolinic acid, pic = 4-picoline) and RuII(pbic)(pic) 3 (2; H(2)pbic = 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.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2016. Vol. 45, no 46, p. 18459-18464
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-200046DOI: 10.1039/c6dt02056aISI: 000388369000009PubMedID: 27431362Scopus ID: 2-s2.0-84997078149OAI: oai:DiVA.org:kth-200046DiVA, id: diva2:1068760
Funder
Swedish Energy AgencyKnut and Alice Wallenberg Foundation
Note

QC 20170126

Available from: 2017-01-26 Created: 2017-01-20 Last updated: 2017-01-26Bibliographically approved

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Sun, Licheng

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