Catalytic water oxidation by ruthenium(II) quaterpyridine (qpy) complexes : Evidence for ruthenium(III) qpy-N,N''-dioxide as the real catalysts

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Yingying Liu
  • Siu-Mui Ng
  • Shek-Man Yiu
  • William W. Y. Lam
  • Xi-Guang Wei
  • Tai-Chu Lau

Detail(s)

Original languageEnglish
Pages (from-to)14468-14471
Journal / PublicationAngewandte Chemie - International Edition
Volume53
Issue number52
Online published27 Oct 2014
Publication statusPublished - 22 Dec 2014

Abstract

Polypyridyl and related ligands have been widely used for the development of water oxidation catalysts. Supposedly these ligands are oxidation-resistant and can stabilize high-oxidation-state intermediates. In this work a series of ruthenium(II) complexes [Ru(qpy)(L)2] (qpy= 2,2' :6',2":6'',2'''-quaterpyridine; L = substituted pyridine) have been synthesized and found to catalyze Ce-driven water oxidation, with turnover numbers of up to 2100. However, these ruthenium complexes are found to function only as precatalysts; first, they have to be oxidized to the qpy-N,N'''- dioxide (ONNO) complexes [Ru(ONNO)(L)2] which are the real catalysts for water oxidation.

Research Area(s)

  • Density functional calculations, Homogeneous catalysis, Polypyridyl ligands, Ruthenium complexes, Water oxidation

Citation Format(s)

Catalytic water oxidation by ruthenium(II) quaterpyridine (qpy) complexes: Evidence for ruthenium(III) qpy-N,N''-dioxide as the real catalysts. / Liu, Yingying; Ng, Siu-Mui; Yiu, Shek-Man et al.
In: Angewandte Chemie - International Edition, Vol. 53, No. 52, 22.12.2014, p. 14468-14471.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review