Journal :   Asian Journal of Research in Chemistry

Volume No. :   4

Issue No. :  10

Year :  2011

Pages :   1630-1631

ISSN Print :  0974-4169

ISSN Online :  0974-4150


Registration

Allready Registrered
Click to Login

The Determination of the Stability Constants of Mixed Ligand Complexes of Ascorbic Acid, Pyridoxine HCl and Some Amino Acids with Some Metal Ions by Potentiometric Titration Method



Address:   Abdulbaset A. Zaid1, Mazahar Farooqui1,2 and D.M. Janrao3
1Post Graduate and Research Center, Maulana Azad College, Aurangabad (MS).
2Dr.Rafiq Zakaria College for Women, Aurangabad (MS).
3J.E.S. College, Jalna, Maharashtra, India.
*Corresponding Author
DOI No:

ABSTRACT:
A potentiometric titration technique has been used to determine the stability constants for the various complexes of Cu(II), Ni(II), Co(II) with Ascorbic acid, Pyridoxine.HCl (L2)as secondary ligand and selected amino acids (L1) as primary ligands.Ternary complexes of amino acids are formed in a stepwise mechanism, where by (A) binds to Cu(II), Ni(II), Co(II), followed by interaction with ligand (L), whereas the ligands form ternary complexes through a simultaneous mechanism. The formation constants of the complexes were determined at room temperature and ionic strength 0.1 M NaClO4. The relative stabilities of the ternary complexes are compared with those of the corresponding binary complexes in terms of ?logK values. The concentration distributions of the complexes were evaluated.
KEYWORDS:
Ternary complex, binary complex, metal ions, potentiometric titration, vitamin C, vitaminB6.
Cite:
Abdulbaset A. Zaid, Mazahar Farooqui, D.M. Janrao. The Determination of the Stability Constants of Mixed Ligand Complexes of Ascorbic Acid, Pyridoxine HCl and Some Amino Acids with Some Metal Ions by Potentiometric Titration Method. Asian J. Research Chem. 4(10): Oct., 2011; Page 1630-1631.
[View HTML]      [View PDF]



Visitor's No. :   127315