Synthesis, structure and redox properties of (?-oxo)bis(?-carboxylato)diruthenium(III) complexes containing three different terminal ligands

Syamala, Ariyanchira and Chakravarty, Akhil R (1993) Synthesis, structure and redox properties of (?-oxo)bis(?-carboxylato)diruthenium(III) complexes containing three different terminal ligands. In: Polyhedron, 12 (3). pp. 273-278.

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Abstract

Blue coloured, unstable, essentially diamagnetic and non-electrolytic diruthenium(III) complexes of the formation [Ru2O(O2CR)4(en)2(PPh3)2] were prepared by reacting [Ru2O(O2CR)4(PPh3)2] with 1,2-diaminoethane (en) in CH2Cl2 (R = C6H4-p-X; X = H, Me and OMe). The molecular structure of the complexes is proposed as [{(?1-O2CR)(?1-en)(PPH3)Ru}2(?-O)(?-O2CR)2] based on the 1H NMR spectral data. The electronic spectra of the complexes display a band near 569 nm with a shoulder at 630 nm. In CH2Cl2-0.1 M [Bun4N]ClO4, the complexes exhibit redox couples Ru2III,III/Ru2III,IV and Ru2III,IV/Ru2IV,IV near 0.1 and 1.2 V (vs SCE), respectively. The potentials are the lowest among diruthenium(III) complexes with a similar core structure.

Item Type:	Journal Article
Publication:	Polyhedron
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	10 Mar 2011 06:52
Last Modified:	10 Mar 2011 06:52
URI:	http://eprints.iisc.ac.in/id/eprint/35866

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