Thermodynamic considerations in co-ordination. Part XXI. Structures of copper(II)–asparaginate, –histidinate, and –threoninate ternary complexes in aqueous solution

1975 ◽  
pp. 1757 ◽  
Author(s):  
Allan C. Baxter ◽  
David R. Williams
Keyword(s):  
Aqueous Solution ◽  
Ternary Complexes

Study of copper(II) ternary complexes with phosphocreatine and some polyamines in aqueous solution

2011 ◽  
Vol 105 (12) ◽  
pp. 1712-1719 ◽  
Author(s):  
Natalie W. Szyfman ◽  
Nina P. Loureiro ◽  
Thaís Tenório ◽  
Ana L.R. Mercê ◽  
Antônio Sálvio Mangrich ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ternary Complexes

scholarly journals Stability Constants of Mixed Ligand Complexes of Nickel(II) with Adenine and Some Amino Acids

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Naciye Türkel
Keyword(s):  
Aqueous Solution ◽  
Amino Acids ◽  
Ternary Complex ◽  
Coordination Complexes ◽  
Ternary Complexes ◽  
Mixed Ligand ◽  
Relative Stabilities ◽  
Binary And Ternary Complexes ◽  
Binary Complexes ◽  
Essential Trace Elements

Nickel is one of the essential trace elements found in biological systems. It is mostly found in nickel-based enzymes as an essential cofactor. It forms coordination complexes with amino acids within enzymes. Nickel is also present in nucleic acids, though its function in DNA or RNA is still not clearly understood. In this study, complex formation tendencies of Ni(II) with adenine and certain L-amino acids such as aspartic acid, glutamic acid, asparagine, leucine, phenylalanine, and tryptophan were investigated in an aqueous medium. Potentiometric equilibrium measurements showed that both binary and ternary complexes of Ni(II) form with adenine and the above-mentioned L-amino acids. Ternary complexes of Ni(II)-adenine-L-amino acids are formed by stepwise mechanisms. Relative stabilities of the ternary complexes are compared with those of the corresponding binary complexes in terms ofΔlog10⁡K,log10⁡X, and % RS values. It was shown that the most stable ternary complex is Ni(II):Ade:L-Asn while the weakest one is Ni(II):Ade:L-Phe in aqueous solution used in this research. In addition, results of this research clearly show that various binary and ternary type Ni(II) complexes are formed in different concentrations as a function of pH in aqueous solution.

Ternary Complexes between Cationic GdIII Chelates and Anionic Metabolites in Aqueous Solution: An NMR Relaxometric Study

2003 ◽  
Vol 9 (9) ◽  
pp. 2102-2109 ◽  
Author(s):  
Mauro Botta ◽  
Silvio Aime ◽  
Alessandro Barge ◽  
Gabriella Bobba ◽  
Rachel S. Dickins ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ternary Complexes
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