ChemInform Abstract: STABILITIES OF BINARY AND TERNARY COMPLEXES OF DIVALENT METAL IONS WITH TIRON AND 2,2′-BIPYRIDYL

1983 ◽  
Vol 14 (24) ◽  
Author(s):  
M. OTTO ◽  
H. ZWANZIGER ◽  
G. WERNER
Keyword(s):  
Metal Ions ◽  
Divalent Metal ◽  
Ternary Complexes ◽  
Divalent Metal Ions ◽  
Binary And Ternary Complexes

Complex Formation Study of Binary and Ternary Complexes Including 2,3-Dihydroxybenzoic Acid, N-acetylcysteine and Divalent Metal Ions

2016 ◽  
Vol 45 (4) ◽  
pp. 518-533 ◽  
Author(s):  
Shella Permatasari Santoso ◽  
Artik Elisa Angkawijaya ◽  
Suryadi Ismadji ◽  
Aning Ayucitra ◽  
Felycia Edi Soetaredjo ◽  
...  
Keyword(s):  
Complex Formation ◽  
Metal Ions ◽  
Divalent Metal ◽  
Ternary Complexes ◽  
Divalent Metal Ions ◽  
Dihydroxybenzoic Acid ◽  
Binary And Ternary Complexes

scholarly journals Investigation of Extent of Interaction of Thiobarbituric Acid and Two Selected Amino Acids with Three Divalent Metal Ions in Aqueous-organic Medium at Different Temperatures

2019 ◽  
pp. 1-8
Author(s):  
M. A. Oladipo ◽  
K. T. Ishola ◽  
T. A. Ajayeoba
Keyword(s):  
Metal Ions ◽  
Thiobarbituric Acid ◽  
Entropy Change ◽  
Formation Constants ◽  
Ternary Complexes ◽  
Water Mixture ◽  
Divalent Metal Ions ◽  
Binary And Ternary Complexes ◽  
Binary Complexes ◽  
The Difference

The formation constants of binary and ternary complexes of Thiobarbituric acid as primary ligand and L-tyrosine and L-histidine as secondary ligands have been examined in 40% (v/v) ethanol-water mixture at 27oC and 35oC and at ionic strength of 0.02 NaNO3 by potentiometric method. The ligands formed 1:1 binary complexes with the metal ions. The primary and secondary ligands simultaneously coordinated to the metal ions to form 1:1:1 ternary complexes. The difference in stability constants of binary and ternary complexes were determined by DlogK and RS%. Ternary complexes exhibited enhanced stability than the binary complexes. The stability of the complexes decrease with increase in temperature. The thermodynamic parameters such as Gibb’s free energy change (ΔG), entropy change (ΔS) and enthalpy change (ΔH) accompany the interactions were evaluated. The interactions were found to be spontaneous, exothermic, and entropically favoured.

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