scholarly journals CHEMICAL SPECIATION OF BINARY COMPLEXES OF L-PHENYLALANINE AND MALEIC ACID WITH SOME METAL IONS IN DMF- WATER MIXTURES.

2018 ◽  
Vol 6 (9) ◽  
pp. 184-195
Author(s):  
WondimuTesfa Tefera ◽  
WakgariBungula Negassa ◽  
Tajedin Alansi ◽  
TegeneDesalegn Zeleke ◽  
HadguHailekiros Belay
Keyword(s):  
Metal Ions ◽  
Maleic Acid ◽  
Chemical Speciation ◽  
Binary Complexes

Chemical speciation of binary complexes of L-valine with Co(II), Ni(II) and Cu(II) in propylene glycol–water mixtures

2013 ◽  
Vol 25 (1) ◽  
pp. 57-62
Author(s):  
Peketi Bhushanavathi ◽  
Boddu Veeraswami ◽  
Uppuleti Viplavaprasad ◽  
Gollapalli Nageswara Rao
Keyword(s):  
Propylene Glycol ◽  
Chemical Speciation ◽  
Binary Complexes

Adsorptions of Some Heavy Metal Ions in Aqueous Solutions by Acrylamide/Maleic Acid Hydrogels

1995 ◽  
Vol 30 (17) ◽  
pp. 3287-3298 ◽  
Author(s):  
Dursun Saraydin ◽  
Erdener Karadağ ◽  
Olgun Güven
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Maleic Acid ◽  
Heavy Metal Ions

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.

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