Ternary Complexes of Cd(II) Involving Pyridine-2-carboxylic Acid and Biorelevant Ligands | ||||
| Egyptian Journal of Chemistry | ||||
| Article 1, Volume 59, Issue 5, October 2016, Page 673-686 PDF (814.34 K) | ||||
| DOI: 10.21608/ejchem.2016.1443 | ||||
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| Abstract | ||||
| OMPLEX formation reactions involving Cd(II), pyridine -2- carboxylic acid ( picolinic acid, PA) and various biorelevant ligands (L) containing different functional groups are investigated at 25 ºC and I = 0.10 M (NaNO3). The ligands (L) used are amino acids, peptides and DNA constituents. The results showed the formation of Cd(II)-(PA)-(L) complexes with amino acids and DNA constituents, peptides form both Cd(II)-(PA)-(L) complexes and the corresponding deprotonated amide species Cd(II)-(PA)-(LH-1). The relative stabilities of ternary complexes are compared with those of the corresponding binary complexes in terms of ∆ log K values. The concentration distribution of the complexes in solution was evaluated. | ||||
| Keywords | ||||
| Cd(II); Picolinic acid; Amino acids; peptides; DNA constituents; Stability constant | ||||
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