Chakravarty, Akhil Ranjan ; Chakravorty, Animesh (1982) Chemistry of ruthenium. Part 6. Bis(2,2'-bipyridine)(isonitrosoketonato)ruthenium(II) perchlorate monohydrate. Synthesis, spectra, and electrochemistry Journal of the Chemical Society, Dalton Transactions, 1982 (9). pp. 1765-1771. ISSN 0300-9246
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Official URL: http://pubs.rsc.org/en/content/articlelanding/1982...
Related URL: http://dx.doi.org/10.1039/DT9820001765
Abstract
New ruthenium(II) complexes of type [Ru(bipy)2(L)](ClO4)·H2O are formed by the reaction of [Ru(bipy)2Cl2] with HL and in one case by chelative nitrosation of ketones with [Ru(bipy)2(NO)Cl]2+[HL=RC(=NOH)C(=O)R', bipy = 2,2'-bipyridine]. These display metal-to-ligand charge-transfer transitions in the visible region (450-490 nm), a reversible RuIII-RuII couple near 0.9 V versus s.c.e., and one or more ligand reduction couples below -I V. Trends of E298° values for a group of related complexes are rationalised. The oxidised complex [Ru(bipy)2(L)]2+ is unstable and has a ligand-to-metal charge-transfer transition near 600 nm. Its energy correlates linearly with E298° of the RuIII-RuII couple. In acetonitrile, [Ru(bipy)2(L)]+ can be protonated to [Ru(bipy)2(HL)]2+. The RuIII-RuII couple of the protonated complex is at a higher (~1.0 V) potential than that of [Ru(bipy)2(L)]+. The chemistries of [Ru(bipy)2(L)]+ and [RuX2(HL)(L)] are compared.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Royal Society of Chemistry. |
| ID Code: | 78246 |
| Deposited On: | 18 Jan 2012 10:38 |
| Last Modified: | 13 Jul 2012 13:41 |
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