Research Article

Stability constants of ternary complexes β-lactam antibiotic drugs with bivalent transition metal(II) ions in the presence of aliphatic amino acids

Volume: 28 Number: 6 June 28, 2025
EN

Stability constants of ternary complexes β-lactam antibiotic drugs with bivalent transition metal(II) ions in the presence of aliphatic amino acids

Abstract

Metal complex structures are important in many biological processes where coordination can occur between various metal ions and a wide variety of ligands. Here we compared bivalent transition metal(II) ions- ternary complexes with penicillin class amoxicillin and cephalosporin class cefaclor actives in the presence of aliphatic amino acids. The complex formation conditions and compositions of the complexes formed by the classical, economical and reproducible Irving-Rossotti method were investigated. Therefore, the formation conditions and compositions of binary and ternary complexes were investigated by the Irving Rossotti procedure. Ternary complexes are prepared by mixing metal(II) with active ingredients and the appropriate amount of primary ligand or L-asparagine (ASP) or L-glutamic acid (Glut). In the ternary systems, ASP and Glut are primary ligands (L) whereas amoxicillin (Amox) and cefaclor (Cefa) behave as a secondary ligand (Y). From the calculated formation constants of the complexes formed by the selected blactam antibiotics and amino acids with Cu(II) and Zn(II) metals, it was determined that the metal-ligand mole ratios were 1:1:1 (M:L:Y). At room temperature, the formation constants of the complexes were found by adjusting the ionic strength to 0.11 mol dm-3 with NaCIO4: logb(Cu(II)-ASP-Amox)=15.83±0.01; logb (Cu(II)-Glut-Amox)=20.76±0.01; logb(Cu(II)-ASPCefa)= 16.59±0.01; logb(Cu(II)-Glut-Cefa)=5.72±0.01; logb(Zn(II)-ASP-Amox)=5.32±0.01; logb(Zn(II)-Glut-Amox)=4.62±0.01; logb(Zn(II)-ASPCefa)= 5.46±0.01; logb(Zn(II)-Glut-Cefa)=4.52±0.01 respectively. The relative stabilities of the ternary complexes (ΔlogK) were interpreted by comparison with the stabilities of the corresponding binary complexes, with negative ΔlogK values observed for all complexes.

Keywords

References

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Details

Primary Language

English

Subjects

Pharmaceutical Analytical Chemistry

Journal Section

Research Article

Publication Date

June 28, 2025

Submission Date

March 28, 2024

Acceptance Date

May 23, 2024

Published in Issue

Year 2024 Volume: 28 Number: 6

APA
Karaderi, S., Bilgiç Alkaya, D., Erdoğan, G., & Kurt Cücü, A. (2025). Stability constants of ternary complexes β-lactam antibiotic drugs with bivalent transition metal(II) ions in the presence of aliphatic amino acids. Journal of Research in Pharmacy, 28(6), 2215-2222. https://doi.org/10.29228/jrp.892
AMA
1.Karaderi S, Bilgiç Alkaya D, Erdoğan G, Kurt Cücü A. Stability constants of ternary complexes β-lactam antibiotic drugs with bivalent transition metal(II) ions in the presence of aliphatic amino acids. J. Res. Pharm. 2025;28(6):2215-2222. doi:10.29228/jrp.892
Chicago
Karaderi, Serap, Dilek Bilgiç Alkaya, Gülbin Erdoğan, and Ayşen Kurt Cücü. 2025. “Stability Constants of Ternary Complexes β-Lactam Antibiotic Drugs With Bivalent Transition Metal(II) Ions in the Presence of Aliphatic Amino Acids”. Journal of Research in Pharmacy 28 (6): 2215-22. https://doi.org/10.29228/jrp.892.
EndNote
Karaderi S, Bilgiç Alkaya D, Erdoğan G, Kurt Cücü A (July 1, 2025) Stability constants of ternary complexes β-lactam antibiotic drugs with bivalent transition metal(II) ions in the presence of aliphatic amino acids. Journal of Research in Pharmacy 28 6 2215–2222.
IEEE
[1]S. Karaderi, D. Bilgiç Alkaya, G. Erdoğan, and A. Kurt Cücü, “Stability constants of ternary complexes β-lactam antibiotic drugs with bivalent transition metal(II) ions in the presence of aliphatic amino acids”, J. Res. Pharm., vol. 28, no. 6, pp. 2215–2222, July 2025, doi: 10.29228/jrp.892.
ISNAD
Karaderi, Serap - Bilgiç Alkaya, Dilek - Erdoğan, Gülbin - Kurt Cücü, Ayşen. “Stability Constants of Ternary Complexes β-Lactam Antibiotic Drugs With Bivalent Transition Metal(II) Ions in the Presence of Aliphatic Amino Acids”. Journal of Research in Pharmacy 28/6 (July 1, 2025): 2215-2222. https://doi.org/10.29228/jrp.892.
JAMA
1.Karaderi S, Bilgiç Alkaya D, Erdoğan G, Kurt Cücü A. Stability constants of ternary complexes β-lactam antibiotic drugs with bivalent transition metal(II) ions in the presence of aliphatic amino acids. J. Res. Pharm. 2025;28:2215–2222.
MLA
Karaderi, Serap, et al. “Stability Constants of Ternary Complexes β-Lactam Antibiotic Drugs With Bivalent Transition Metal(II) Ions in the Presence of Aliphatic Amino Acids”. Journal of Research in Pharmacy, vol. 28, no. 6, July 2025, pp. 2215-22, doi:10.29228/jrp.892.
Vancouver
1.Serap Karaderi, Dilek Bilgiç Alkaya, Gülbin Erdoğan, Ayşen Kurt Cücü. Stability constants of ternary complexes β-lactam antibiotic drugs with bivalent transition metal(II) ions in the presence of aliphatic amino acids. J. Res. Pharm. 2025 Jul. 1;28(6):2215-22. doi:10.29228/jrp.892