Complex Series [Ru(tpy)(dpk)(X)]n+ (tpy = 2,2':6',2' '-Terpyridine; dpk = 2,2'-Dipyridyl Ketone; X = Cl-, CH3CN, NO2-
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- 作者：Sounak Sarkar ; Biprajit Sarkar ; Nripen Chanda ; Sanjib Kar ; Shaikh M. Mobin ; Jan Fiedler ; Wolfgang Kaim ; and Goutam Kumar Lahiri
- 刊名：Inorganic Chemistry
- 出版年：2005
- 出版时间：August 22, 2005
- 年：2005
- 卷：44
- 期：17
- 页码：6092 - 6099
- 全文大小：193K
- 年卷期：v.44,no.17(August 22, 2005)
- ISSN：1520-510X
文摘
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+ ([4]3+). Stepwise conversion of the chloro complex [Ru(tpy)(dpk)(Cl)]+ ([1]+) via [Ru(tpy)(dpk)(CH3CN)]2+ ([2]2+) and the nitro compound [Ru(tpy)(dpk)(NO2)]+ ([3]+) yielded [4]3+; all four complexes were structurallycharacterized as perchlorates. Electrochemical oxidation and reduction was investigated as a function of themonodentate ligand as was the IR and UV-vis spectroscopic response (absorption/emission). The kinetics of theconversion [4]3+/[3]+ in aqueous environment were also studied. Two-step reduction of [4]3+ was monitored viaEPR, UV-vis, and IR (
(NO), (CO)) spectroelectrochemistry to confirm the {RuNO}7 configuration of [4]2+ andto exhibit a relatively intense band at 505 nm for [4]+, attributed to a ligand-to-ligand transition originating frombound NO-.
(NO), (CO)) spectroelectrochemistry to confirm the {RuNO}7 configuration of [4]2+ andto exhibit a relatively intense band at 505 nm for [4]+, attributed to a ligand-to-ligand transition originating frombound NO-.