Potentiometric Studies on the Formation Equilibria of Binary and Ternary Complexes of Some Metal Ions with Dipicolinic Acid and Amino Acids

2000 ◽  
Vol 45 (6) ◽  
pp. 1108-1111 ◽  
Author(s):  
Mohamed M. Khalil ◽  
Abeer E. Attia
Keyword(s):  
Amino Acids ◽  
Metal Ions ◽  
Dipicolinic Acid ◽  
Ternary Complexes ◽  
Potentiometric Studies ◽  
Binary And Ternary Complexes ◽  
Formation Equilibria

scholarly journals Potentiometric and UV Spectral Studies of Binary and Ternary Complexes of Some Metal Ions withN-Acetylcysteine and Amino Acids

2009 ◽  
Vol 6 (s1) ◽  
pp. S117-S122 ◽  
Author(s):  
Shaesta Quyoom ◽  
Badr-Ud-Din Khan
Keyword(s):  
Amino Acids ◽  
Metal Ions ◽  
Aqueous Medium ◽  
Dissociation Constants ◽  
Formation Constants ◽  
Ternary Complexes ◽  
Acid Dissociation ◽  
Spectral Studies ◽  
Binary And Ternary Complexes ◽  
Structural Nature

The formation constants of the binary 1:1 and 1:2 complexes of Cu(II), Zn(II), Cd(II), Hg(II), and Pb(II) withN-acetylcysteine (NAC) and 1:1:1 ternary complexes of the said metal ions with NAC as a primary ligand and some biologically important amino acids as secondary ligands have been determined potentiometrically in aqueous medium. Acid dissociation constants of the ligands used and the formation constants of the binary and the ternary complexes were determined at 25 °C and in ionic strength I=0.1 mol dm-3(KNO3).The formation constants of the 1:1 complexes were found to be higher than 1:2 complexes and the metal ions follow the order Hg(II) >Cu(II) >Cd(II) >Zn(II). In addition UV-spectral studies of the NAC-Metal (II) complexes have also been conducted at appropriate pH values to give further information about the structural nature of NAC- Metal (II) complexes in aqueous medium.

Stability of nickel(II) binary and ternary complexes with dipicolinic acid and the amino acids serine, threonine, methionine and phenylalanine

2017 ◽  
Vol 230 ◽  
pp. 370-373 ◽  
Author(s):  
Daniela Gallardo ◽  
Kenneth Puche ◽  
Alejandro Pérez ◽  
Edgar Del Carpio ◽  
Lino Hernández ◽  
...  
Keyword(s):  
Amino Acids ◽  
Dipicolinic Acid ◽  
Ternary Complexes ◽  
Binary And Ternary Complexes

scholarly journals Potentiometric studies on the formation equilibria of ternary complexes of vanadium(III) with cysteine and some amino acids

2015 ◽  
Vol 27 (1) ◽  
pp. 22-28 ◽  
Author(s):  
Eduis Guerra ◽  
Yendry Martínez ◽  
José Daniel Martínez ◽  
Mary Lorena Araujo ◽  
Felipe Brito ◽  
...  
Keyword(s):  
Amino Acids ◽  
Ternary Complexes ◽  
Potentiometric Studies ◽  
Formation Equilibria
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