Electrochemical studies of the bimetallic complex formed by ruthenium(II) polypyridine and manganese(III) porphyrin
Journal Article
·
· Journal of Coordination Chemistry
- Laboratorio de Quimica Biomimetica, Florianopolis (Brazil)
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.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 240972
- Journal Information:
- Journal of Coordination Chemistry, Journal Name: Journal of Coordination Chemistry Journal Issue: 3 Vol. 36; ISSN JCCMBQ; ISSN 0095-8972
- Country of Publication:
- United States
- Language:
- English
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