Electrochemical Investigation of the Kinetics of Chloride Substitution upon Reduction of [Ru(porphyrin)(NO)Cl] Complexes in Tetrahydrofuran

Abstract

What is the most significant result of this study?Ruthenium nitrosyl (Ru-NO) compounds serve as models for biologically importantF e-containing heme-NO species. The Ru-NO analogues tend to be six-coordinate, whereas the Fe-NO heme models readilyf orm five-coordinate {FeNO} 7 species using the Enemark-Feltham notation. This study shows that the sixth ligand in the {RuNO} 7 porphyrin species can be readily replaced by the solvent under reducingc onditions at diffusion-controlled rates, and implies that the chemistry of the {FeNO} 7 and{ RuNO} 7 species may have more parallels than the coordination number differences suggest.