ELECTROCHEMICAL STUDIES OF THE BIMETALLIC COMPLEX FORMED BY RUTHENIUM(II) POLYPYRIDINE AND MANGANESE(III) PORPHYRIN

Autor:	Marcos M.S. Paula, César V. Franco
Rok vydání:	1995
Předmět:	Center (category theory) chemistry.chemical_element Manganese Photochemistry Porphyrin Ruthenium chemistry.chemical_compound Crystallography chemistry Pyridine Materials Chemistry Moiety Physical and Theoretical Chemistry Acetonitrile Bimetallic strip
Zdroj:	Journal of Coordination Chemistry. 36:247-258
ISSN:	1029-0389 0095-8972
DOI:	10.1080/00958979508022567
Popis:	In this communication, the authors present results on the synthesis and characterization of a new meso-(5-(4-pyridil) 10,15,20 triphenyl porphyrinate) chloro manganese (III) porphyrin (ClMnP(Ph){sub 3}py) modified with one [(H{sub 2}O)Ru(bpy){sup 2}]{sup 2+} group coordinated with the pyridine on the meso-position of the porphyrin ring. The resulting bimetallic complex was characterized by resonance Raman, IR, far-IR and electronic spectroscopy. Cyclic voltammograms of this monoruthenated porphyrin compound in acetonitrile exhibit three reversible waves at 1.53, 0.96 and 0.03V vs NHE. Spectroelectrochemical experiments were performed in acetonitrile and dimethyl sulfoxide and the results are in agreement with the cyclic voltammetric results. The anodic peak current of the cyclic voltammogram waves of the manganese porphyrin moiety in the monoruthenated compound was suppressed in the presence of atmospheric oxygen. These results provide evidence for an associative process of O{sub 2} with the Mn(III) center of the porphyrin.
Databáze:	OpenAIRE
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