Abstract
Incorporation of negatively charged moieties into complexes is a promising strategy to develop water oxidation catalysts with high stability and low over-potentials. We reported here the synthesis of a novel pincer-type ligand precursor, 1-(pyridin-2-ylmethyl)-3-methylcarboxylate-imidazolium (1). Deprotonation of C2-H of 1 resulted in formation of NCNHCO, a negatively charged asymmetric N-heterocyclic carbene (NHC). Complexes [Ru(NCNHCO)(terpy)]+ (2) and RuCl(NCNHCO)(DMSO)(pic) (3) were prepared and capable of decomposing water chemically and photo-chemically. Under acidic conditions, 4-picoline/H2O exchange in 3 was detected by UV-vis and 1H NMR, forming the corresponding Ru-aqua complex. In a typical three-component light-induced water oxidation, a turnover number of 273 was attained employing 3, which demonstrated catalytic ability comparable to those state-of-the-art catalysts.
| Original language | English |
|---|---|
| Pages (from-to) | 387-395 |
| Number of pages | 9 |
| Journal | Catalysis Science and Technology |
| Volume | 7 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Jan 2017 |
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ASJC Scopus subject areas
- Catalysis
Cite this
Chemical and photochemical water oxidation catalyzed by novel ruthenium complexes comprising a negatively charged NCNHCO ligand. / Su, Wei; Younus, Hussein A.; Zhou, Kui; Khattak, Zafar A.K.; Chaemcheun, Somboon; Chen, Cheng; Verpoort, Francis.
In: Catalysis Science and Technology, Vol. 7, No. 2, 01.01.2017, p. 387-395.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Chemical and photochemical water oxidation catalyzed by novel ruthenium complexes comprising a negatively charged NCNHCO ligand
AU - Su, Wei
AU - Younus, Hussein A.
AU - Zhou, Kui
AU - Khattak, Zafar A.K.
AU - Chaemcheun, Somboon
AU - Chen, Cheng
AU - Verpoort, Francis
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Incorporation of negatively charged moieties into complexes is a promising strategy to develop water oxidation catalysts with high stability and low over-potentials. We reported here the synthesis of a novel pincer-type ligand precursor, 1-(pyridin-2-ylmethyl)-3-methylcarboxylate-imidazolium (1). Deprotonation of C2-H of 1 resulted in formation of NCNHCO, a negatively charged asymmetric N-heterocyclic carbene (NHC). Complexes [Ru(NCNHCO)(terpy)]+ (2) and RuCl(NCNHCO)(DMSO)(pic) (3) were prepared and capable of decomposing water chemically and photo-chemically. Under acidic conditions, 4-picoline/H2O exchange in 3 was detected by UV-vis and 1H NMR, forming the corresponding Ru-aqua complex. In a typical three-component light-induced water oxidation, a turnover number of 273 was attained employing 3, which demonstrated catalytic ability comparable to those state-of-the-art catalysts.
AB - Incorporation of negatively charged moieties into complexes is a promising strategy to develop water oxidation catalysts with high stability and low over-potentials. We reported here the synthesis of a novel pincer-type ligand precursor, 1-(pyridin-2-ylmethyl)-3-methylcarboxylate-imidazolium (1). Deprotonation of C2-H of 1 resulted in formation of NCNHCO, a negatively charged asymmetric N-heterocyclic carbene (NHC). Complexes [Ru(NCNHCO)(terpy)]+ (2) and RuCl(NCNHCO)(DMSO)(pic) (3) were prepared and capable of decomposing water chemically and photo-chemically. Under acidic conditions, 4-picoline/H2O exchange in 3 was detected by UV-vis and 1H NMR, forming the corresponding Ru-aqua complex. In a typical three-component light-induced water oxidation, a turnover number of 273 was attained employing 3, which demonstrated catalytic ability comparable to those state-of-the-art catalysts.
UR - http://www.scopus.com/inward/record.url?scp=85014950125&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85014950125&partnerID=8YFLogxK
U2 - 10.1039/c6cy02333a
DO - 10.1039/c6cy02333a
M3 - Article
AN - SCOPUS:85014950125
VL - 7
SP - 387
EP - 395
JO - Catalysis Science and Technology
JF - Catalysis Science and Technology
SN - 2044-4753
IS - 2
ER -