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DOI: 10.1039/A608250E (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1997, 1967-1972

Complexation of aluminium(III) with several bi- and tri-dentate amino acids

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Tamás Kiss, Imre Sóvágó, Imre Tóth, Imre Sóvágó, Imre Tóth,, Andrea Lakatos, Roberta Bertani, Andrea Tapparo, Giorgio Bombi, R. Bruce Martin , Andrea Lakatos, Roberta Bertani, Andrea Tapparo, Giorgio Bombi and R. Bruce Martin

Abstract

Complex formation between AlIII and various bidentate and potentially tridentate amino acids (Gly, Ser, Thr, Gln, Asn, Glu and Asp) and some model compounds (N-acetylaspartic acid, succinic acid, and 2-sulfanylsuccinic acid) was studied in aqueous solution by pH-potentiometric and multinuclear (1H, 13C and 27Al) NMR techniques. A weak interaction through the carboxylate function was unambiguously detected for all of these ligands. For Asp, however, which contains two carboxylates and a central amino donor, tridentate co-ordination is strongly suggested. Although its steric environment is similar to that of the amino function in Asp, binding of the thiolate sulfur of 2-sulfanylsuccinic acid could not be verified.

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