Intervalence charge transfer in the stereoisomers of a dinuclear ruthenium complex containing the bridging ligand dibenzoeilatin

Deanna M. D'Alessandro, F. Richard Keene, Sheba D. Bergman, Moshe Kol

Research output: Contribution to journalArticlepeer-review

Abstract

The dinuclear species [{Ru(bpy)2}2(μ-dbneil)] 4+ (bpy = 2,2'-bipyridine; dbneil = dibenzoeilatin) was separated into its three stereoisomeric forms by cation-exchange Chromatographic techniques. The NMR characteristics of the two diastereoisomers (meso and rac) are very similar, consistent with the decreased anisotropic interactions between the terminal bpy ligands located on different ruthenium centres because of their large spatial separation. Spectroelectrochemical measurements of the IVCT transitions in the mixed valence (5+) species show the system to be in the class II-III regime with substantial electronic communication between the metal centres. There is no significant difference in IVCT behaviour between the two diastereoisomers.

Original languageEnglish
Pages (from-to)332-337
Number of pages6
JournalDalton Transactions
Issue number2
DOIs
StatePublished - 21 Jan 2005

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