Potentiometric determination of stability constants of Ternary complexes of first row Transition Metal ions with Ditopic Azelaic acid dihydrazide and Aspartic acid in aqueous medium

2021 ◽  
pp. 100141
Author(s):  
D. Nirmala Devi ◽  
P. Shyamala ◽  
B. Uma Rani ◽  
A. Satyanarayana
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Aqueous Medium ◽  
Aspartic Acid ◽  
Stability Constants ◽  
Azelaic Acid ◽  
Transition Metal Ions ◽  
Ternary Complexes ◽  
Potentiometric Determination

scholarly journals Stability constants of Nicotinic acid (vitamin B3) complexes with transition metal ions

2020 ◽  
Vol 2 (7) ◽  
pp. 136-138
Author(s):  
Shalini Dengle ◽  
Mahesh Shivoorkar ◽  
Momin Nishad Parvin ◽  
Ayesha Nuzat Durrani
Keyword(s):  
Transition Metal ◽  
Nicotinic Acid ◽  
Metal Ions ◽  
Stability Constants ◽  
Transition Metal Ions ◽  
Vitamin B3

scholarly journals Mixed Ligand Complexes of Transition Metal Ions with Selective Bio-Ligands in Surfactant-Water Mixtures

2019 ◽  
Vol 8 (2S11) ◽  
pp. 3182-3190
Keyword(s):  
Hydrogen Bonding ◽  
Transition Metal ◽  
Metal Ions ◽  
Chemical Speciation ◽  
Transition Metal Ions ◽  
Ternary Complexes ◽  
Mixed Ligand ◽  
Stacking Interactions ◽  
Micellar Media ◽  
Chelate Effect

Chemical speciation of ternary complexes of L-arginine and L-aspartic acid with essential transition metal ions was studied pH metrically. The following MLX, MLXH and ML2X ternary species are detected and reported in this paper. The existence of different ternary species is established from modeling studies using the computer program MINIQUAD75. The relative concentrations (M: L: X=1:2:2, 1:2:4, 1:4:2) and stabilities of the ternary species are compared with those of binary species. The extra stability associated with the ternary complexes is attributed to factors such as charge neutralization, chelate effect, stacking interactions and hydrogen bonding. Trend in variation of stability constants with the change in the mole fraction of the surfactant in various micellar media is explained on the basis of electrostatic and non-electrostatic forces. Distribution diagrams in relation to pH and plausible structures were presented.

Sign in / Sign up

Export Citation Format

Share Document