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1981 (1)
1Author    Michael Neumann-Spallart, K. KalyanasundaramRequires cookie*
 Title    On the One and Two-Electron Oxidations of Water-Soluble Zinc Porphyrins in Aqueous Media  
 Abstract    The one and two-electron oxidations of water soluble ionic zinc porphyrins (Zinctetra-methylpyridylporphyrin, ZnTMPyP, Zinc-tetra-p-sulfonato-phenyl-porphyrin, ZnTPPS, and Zinc-tetra-p-carboxy-phenylporphyrin, ZnTPPC) leading to the porphyrin /7-cations and /7-dications have been investigated in water by electrochemical (cyclic voltammetry and controlled potential electrolysis) and chemical methods. The half-wave potentials for the oxidation are shown to be markedly dependent on the charge on the /?-substituents. While the one-electron oxidations for all these porphyrins are reversible, the dication formation leads to labile isoporphyrins as intermediates. 
  Reference    Z. Naturforsch. 36b, 596—600 (1981); received December 1 1980/February 19 1981 
  Published    1981 
  Keywords    Redox Potentials, yr-Cation Radicals, Electrochemistry 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0596.pdf 
 Identifier    ZNB-1981-36b-0596 
 Volume    36