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- W1964583805 abstract "The acidity and stability constants of M(Gly)1, M(Ttr)1,and M(Trp)1 M: Cu2+, Cu(Bpy2)2+,and Cu(Phen3)2+ complexes, weredetermined by potentiometric pH titration. It is shown that the stability ofthe binary Cu(L), (L: Gly, Ttr, and Trp) complex is determined by the basicityof the carboxylate group on one side and amino group on the other side. It isdemonstrated that the equilibrium, Cu(Ha4)2+ + Cu(L) Cu(Har)(L) + Cu2+,is displacement due to thewell known experience that mixed ligand complexes formed by a divalent 3d ion,a heteroaromatic N base andan O donor ligand possess increased stability. The stability constants of the1:1 complexes formed between Cu2+, Cu(Bpy)2+ or Cu(Phen)2+ and L2-, were determined by potentiometric pH titration in aqueous solution (I = 0.1 M, NaNO3,25?C). The order of the stability constants was reported. A comparative investigation between ternary complexes of Trp,Ttr, and Gly is made. The comparison of stability constants of these ternarycomplexes show that Cu(Har)(Trp) is found near 100% in closed form but Cu(Har)(Gly)exists in open form. Thedifferences between the above mentioned stability constants are based on stacked form of Cu(Har)(Trp). Thelast provides increased stability." @default.
- W1964583805 created "2016-06-24" @default.
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- W1964583805 date "2014-01-01" @default.
- W1964583805 modified "2023-09-25" @default.
- W1964583805 title "Equilibria and Stability in Glycine, Tartrate and Tryptophan Complexes, Investigation on Interactions in Cu(II) Binary and Ternary Systems in Aqueous Solution" @default.
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- W1964583805 doi "https://doi.org/10.4236/ojinm.2014.41001" @default.
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