Sarkar, Sounak ; Sarkar, Biprajit ; Chanda, Nripen ; Kar, Sanjib ; Mobin, Shaikh M. ; Fiedler, Jan ; Kaim, Wolfgang ; Lahiri, Goutam Kumar (2005) Complex series [Ru(tpy)(dpk)(X)]n+ (tpy = 2,2':6',2''-terpyridine; dpk = 2,2'-dipyridyl ketone; X = Cl-, CH3CN, NO2(-), NO+, NO*, NO-): substitution and electron transfer, structure, and spectroscopy Inorganic Chemistry, 44 (17). pp. 6092-6099. ISSN 0020-1669
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ic050533e
Related URL: http://dx.doi.org/10.1021/ic050533e
Abstract
The complex framework Ru(tpy)(dpk)2+ has been used to study the generation and reactivity of the nitrosyl complex Ru(tpy)(dpk)(NO)3+ (43+). Stepwise conversion of the chloro complex Ru(tpy)(dpk)(Cl)+ (1+) via Ru(tpy)(dpk)(CH3CN)2+ (22+) and the nitro compound Ru(tpy)(dpk)(NO2)+ (3+) yielded 43+; all four complexes were structurally characterized as perchlorates. Electrochemical oxidation and reduction was investigated as a function of the monodentate ligand as was the IR and UV-vis spectroscopic response (absorption/emission). The kinetics of the conversion 43+/3+ in aqueous environment were also studied. Two-step reduction of 43+ was monitored via EPR, UV-vis, and IR (nu(NO), nu(CO)) spectroelectrochemistry to confirm the RuNO7 configuration of 42+ and to exhibit a relatively intense band at 505 nm for 4+, attributed to a ligand-to-ligand transition originating from bound NO-.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 88389 |
| Deposited On: | 28 Mar 2012 10:02 |
| Last Modified: | 28 Mar 2012 10:02 |
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