Spectral and electrochemical properties of the diastereoisomeric forms of azobis(2-pyridine)-bridged diruthenium species

Kelso, Laurence S., Reitsma, David A., and Keene, F. Richard (1996) Spectral and electrochemical properties of the diastereoisomeric forms of azobis(2-pyridine)-bridged diruthenium species. Inorganic Chemistry, 35 (18). pp. 5144-5153.

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Abstract

A series of dinuclear complexes of ruthenium(II) have been synthesized in which α-azodiimines {such as azobis(2-pyridine), apy, and azobis(4-methyl-2-pyridine), mapy} act as the bridge and 2,2'-bipyridine (bpy) or 4,4'-dimethyl-2,2'-bipyridine (Me2bpy) as the terminal ligands. The diastereoisomeric forms of each species {ΔΛ (meso) and ΔΔ/ΛΛ (rac)} have been separated by cation-exchange chromatography and characterized by 1H-NMR spectroscopy. Electronic spectral and electrochemical studies show there to be differences in inter-metal communication between the diastereoisomeric forms in each case. Comparison of the spectroelectrochemical behavior of the range of complexes has allowed unequivocal assignment of the site of the successive reduction processes observed in dinuclear complexes of this type.

Item ID: 22800
Item Type: Article (Research - C1)
ISSN: 1520-510X
Keywords: bipyridyl-like ligands; bidentate polypyridyl ligands; tris-chelate; complexes; coordination-compounds; bridging ligands; ruthenium(ii); chemistry; mononuclear; 2-(phenylazo)pyridine; spectroscopy
Date Deposited: 20 Aug 2012 02:25
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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