Water oxidation by mononuclear ruthenium complexes with TPA-based ligands.
| Autor: | Radaram B; Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, USA., Ivie JA, Singh WM, Grudzien RM, Reibenspies JH, Webster CE, Zhao X |
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| Jazyk: | angličtina |
| Zdroj: | Inorganic chemistry [Inorg Chem] 2011 Nov 07; Vol. 50 (21), pp. 10564-71. Date of Electronic Publication: 2011 Oct 14. |
| DOI: | 10.1021/ic200050g |
| Abstrakt: | The synthesis, characterization, and water oxidation activity of mononuclear ruthenium complexes with tris(2-pyridylmethyl)amine (TPA), tris(6-methyl-2-pyridylmethyl)amine (Me(3)TPA), and a new pentadentate ligand N,N-bis(2-pyridinylmethyl)-2,2'-bipyridine-6-methanamine (DPA-Bpy) have been described. The electrochemical properties of these mononuclear Ru complexes have been investigated by both experimental and computational methods. Using Ce(IV) as oxidant, stoichiometric oxidation of water by [Ru(TPA)(H(2)O)(2)](2+) was observed, while Ru(Me(3)TPA)(H(2)O)(2)](2+) has much less activity for water oxidation. Compared to [Ru(TPA)(H(2)O)(2)](2+) and [Ru(Me(3)TPA)(H(2)O)(2)](2+), [Ru(DPA-Bpy)(H(2)O)](2+) exhibited 20 times higher activity for water oxidation. This study demonstrates a new type of ligand scaffold to support water oxidation by mononuclear Ru complexes. (© 2011 American Chemical Society) |
| Databáze: | MEDLINE |
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