Potentiometric Studies on Binary and Ternary Complexes of Di- and Trivalent Metal Ions Involving Some Hydroxamic Acids, Amino Acids, and Nucleic Acid Components

2004 ◽  
Vol 135 (12) ◽  
pp. 1455-1474 ◽  
Author(s):  
Mohamed M. Khalil ◽  
Ahmed E. Fazary
Keyword(s):  
Amino Acids ◽  
Nucleic Acid ◽  
Metal Ions ◽  
Hydroxamic Acids ◽  
Ternary Complexes ◽  
Potentiometric Studies ◽  
Trivalent Metal ◽  
Binary And Ternary Complexes ◽  
Trivalent Metal Ions

Ferrocenoyl-amino acids: redox response towards di- and trivalent metal ions

2005 ◽  
Vol 690 (5) ◽  
pp. 1209-1217 ◽  
Author(s):  
Francis E. Appoh ◽  
Todd C. Sutherland ◽  
Heinz-Bernhard Kraatz
Keyword(s):  
Amino Acids ◽  
Metal Ions ◽  
Trivalent Metal ◽  
Trivalent Metal Ions

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.

Spectroscopic and potentiometric studies of the interaction of adenine with trivalent metal ions

2009 ◽  
Vol 63 (2) ◽  
pp. 284-295 ◽  
Author(s):  
Yahia Z. Hamada ◽  
Jasmine T. Greene ◽  
Veronica Shields ◽  
Monique Pratcher ◽  
Shandera Gardiner ◽  
...  
Keyword(s):  
Metal Ions ◽  
Potentiometric Studies ◽  
Trivalent Metal ◽  
Trivalent Metal Ions
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