Stereochemical control of donor and acceptor groups in a monomeric chromophore-quencher complex of ruthenium(II)

Rutherford, Todd J., and Keene, F. Richard (1997) Stereochemical control of donor and acceptor groups in a monomeric chromophore-quencher complex of ruthenium(II). Inorganic Chemistry, 36 (13). pp. 2872-2878.

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Abstract

The chromophore−quencher complex [Ru(Me₂bpy)(bpy-MV²⁺)(bpy-PTZ)]⁴⁺, containing one donor (phenothiazine, PTZ) and one acceptor (methyl viologen, MV²⁺) functionality, has been synthesized and separated into its four geometric isomers. This was achieved through the intermediacy of [Ru(Me₂bpy)(bpy-MV²⁺)(py)₂]⁴⁺, the two isomers of which were separated and each reacted stereoselectively with bpy-PTZ to produce two distinct isomer pairs of the target molecule. Cation-exchange chromatography allowed separation to realize the four forms. The isomers of the product and of the intermediates were characterized by NMR spectroscopy. This is the first example of the isolation of geometric isomers of a mononuclear system containing a single donor and single acceptor functionality.

Item ID: 22810
Item Type: Article (Research - C1)
ISSN: 1520-510X
Keywords: photoinduced electron-transfer; charge separation; polypyridyl ligands; energy-transfer; nobel lecture; systems; assemblies; potentials
Date Deposited: 09 Aug 2012 07:03
FoR Codes: 03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030207 Transition Metal Chemistry @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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