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1998 (1)
1Author    E. Rre, P.A M W IlliamRequires cookie*
 Title    Interaction of the Vanadyl(IV) Cation with L-Ascorbic Acid and Related Systems  
 Abstract    The interaction of V 0 2+ with L-ascorbic acid and dehydroascorbic acid was investigated by electronic spectroscopy in solution at different pH values. In the case of ascorbic acid, two different solid complexes containing one or two m onodeprotonated ascorbate ligands could be isolated and characterized. With dehydroascorbic acid, interaction begins at pH = 4 but at higher pH values the ligand is hydrolysed irreversibly, generating 2,3-diketogulonic acid. A solid complex containing this ligand could be precipitated at pH = 7. Its spectroscopic behavior confirms the interaction of the cation with an enolised form of the acid. 
  Reference    Z. Naturforsch. 53b, 256—262 (1998); received O ctober 24 1997 
  Published    1998 
  Keywords    Vanadyl(IV), Ascorbic Acid, Oxidation Products, Solution Interactions, Solid Complexes 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0256.pdf 
 Identifier    ZNB-1998-53b-0256 
 Volume    53