Bis(Dioxolene)(Bipyridine)Ruthenium Redox Series
Abstract
Complexes of the general formula (Ru(bpy)(dioxolene)2)n+ have been prepared where (bpy) is 2,2'-bipyridine, and n = 1, 0, +1. The dioxolene ligand is 1,2-dihydroxybenzene (catechol), 3,5-di-t-butyl- or 3,4,5,6-tetrachloro-1,2-dihydroxybenzene which may formally exist in the catecholate, semiquinone or quinone oxidation state. Redox series of up to five members have been prepared by controlled potential electrolysis of the parent species or, in some cases, by chemical oxidation or reduction. Electrochemistry, magnetism, X-ray structural data and ultraviolet, visible and near infrared electronic, resonance Raman, vibrational (FTIR), nuclear magnetic resonance, electron spin resonance and photoelectron spectra, for various members of the redox series, are discussed in terms of the electronic structures (effective oxidation states, delocalization) of the complexes. Apparent conflicts between results obtained using different techniques are resolved using a simple, qualitative MO model. Keywords: Quinone, Ruthenium, Delocalization, Redox series.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 11, 1988
- Accession Number
- ADA197019
Entities
People
- Alfred Beverley Philip Lever
- Andrew Nevin
- Elaine S. Dodsworth
- Masa-aki Haga
- Milan Melnik
- Pamela R. Auburn
- Wei Liu
Organizations
- University of York