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ISSN 1998-9539

Electron Transfer Reactions of RuIII(edta) Containing the N-Heterocyclic Ligand Pyrazine: Kinetic and Mechanistic Studies

Debabrata Chatterjeea,b@ and Rudi van Eldikb,c,d

aVice-Chancellor’s Research Group, Zoology Department, University of Burdwan, 713104 Burdwan, India

bDepartment of Chemistry and Pharmacy, University of Erlangen-Nuremberg, 91058 Erlangen, Germany

cFaculty of Chemistry, Jagiellonian University, 30-387 Krakow, Poland

dFaculty of Chemistry, N. Copernicus University, 87-100 Torun, Poland

@Corresponding author E-mail: dchat57@hotmail.com

 

Electron transfer reactions involving Ru(III) complexes pioneered by Nobel Laureate Henry Taube in the ‘late sixties’, has been an area of continued research for more than the past five decades. This review focuses on the research progress in the use of a Ru(III) complex containing the ‘edta’ ligand (edta4- = ethylenediaminetetraacetate) in electron transfer processes, and mainly covers the electron transfer reaction of [RuIII(edta)(pz)]- (pz = pyrazine) with biologically important reductants, viz. L-ascorbic acid, catechol, sulfite, sulfide and thiols, highlighting the authors’ own research work. The scope of this review is to contribute to the mechanistic understanding of electron transfer reactions of [RuIII(edta)(pz)]- with aforementioned biologically important electron donors, and to illustrate the preferential reaction pathway(s).