Jean-Claude Bunzli - Lanthanide-Ion Complexation by D-Glucuronic and D-Galacturonic Acids

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  Publication Details (including relevant citation   information):

  Fuks,L., Bunzli,J.C.G. Helvetica Chimica Acta  1993 76 (8) 2992-3000

  Abstract: To assess the potential of naturally   occurring substances in the treatment of heavy-metal   intoxication, the interaction between D-galacturonic and   D-glucuronic acids with several trivalent lanthanide ions has   been studied in aqueous solutions by means of a   spectrophotometric method (27-degrees; 0.1 m NaClO4; pH 4.0).   Values for the overall stability constants for [LnL] and [LnL2]   (Ln = La, Ce, Pr, Nd, Gd, or Lu) complexes are presented and   discussed. The interpretation of the data shows that, similarly   to acetates, the COOH group coordinates metal ions in both [LnL]   and [LnL2] complexes. The 1:1 complexation is supplemented by the   ring C(5)-O-atom. Moreover, the C(4)-O-atom seems to play an   important role in the steric hindrance of the chelating ligand   molecules

  Address (URL): WOS:A1993MN64900023