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Başlık: Stabilities of the ternary complexes of copper(II) with substituted 1,10-phenanthrolines and some amino acids in aqueous solution
Yazarlar: Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.
0000-0002-0483-9642
İnci, Duygu
Aydın, Rahmiye
G-2201-2019
AAH-8936-2021
55082306300
56261495600
Anahtar kelimeler: Copper(II)
1,10-Phenanthroline
4,7-Dimethyl-1,10-phenanthroline
5-Nitro-1,10-phenanthroline
L-Amino acids
L-Phenylalanine
L-Tyrosine
L-Tryptophan
Stability constants
Potentiometric methods
Dioxan-water mixtures
Protonation constants
Ionic strengths
Equilibrium
Ligands
NI(II)
CU(II)
Thermodynamics
Lanthanum(III)
Noradrenaline
Chemistry
Yayın Tarihi: Nis-2014
Yayıncı: Springer/Plenum Publishers
Atıf: İnci, D. ve Aydın, R. (2014). "Stabilities of the ternary complexes of copper(II) with substituted 1,10-phenanthrolines and some amino acids in aqueous solution". Journal of Solution Chemistry, 43(4), 711-726.
Özet: In this study the binary and ternary complexes of copper(II) with substituted 1,10-phenanthrolines [s-phen: 1,10-phenanthroline (phen), 4,7-dimethyl-1,10-phenanthroline (dmphen) and 5-nitro-1,10-phenanthroline (nphen)] and l-amino acids [aa: l-phenylalanine (phe), l-tyrosine (tyr) and l-tryptophan (trp)] have been investigated using potentiometric methods in 0.1 mol center dot L-1 KCl aqueous ionic media at 298.2 K. The protonation constants of the ligands and the stability constants of the binary and ternary complexes of Cu(II) with the ligands were calculated from the potentiometric data using the "BEST" software package. It was inferred that the aromatic 1,10-phenanthrolines act as a primary ligand in the ternary complexes, while the oxygen and nitrogen donor-containing amino acids are secondary ligands. The observed values of Delta log(10) K indicate that the ternary complexes are more stable than the binary ones, suggesting no interaction takes place between the ligands in the ternary complexes. The magnitudes of the measured stability constants of all of the ternary complexes are in the order [Cu(s-phen)(trp)](+) > [Cu(s-phen)(tyr)](+) > [Cu(s-phen)(phe)](+), which is identical to the sequence found for the binary complexes of Cu(II) with the amino acids. When the substituted 1,10-phenanthroline is changed, the stability constants of the ternary complexes decrease in the following order: [Cu(dmphen)(aa)](+) > [Cu(phen)(aa)](+) > [Cu(nphen)(aa)](+).
URI: https://doi.org/10.1007/s10953-014-0157-4
https://link.springer.com/article/10.1007/s10953-014-0157-4
http://hdl.handle.net/11452/28774
ISSN: 0095-9782
1572-8927
Koleksiyonlarda Görünür:Scopus
Web of Science

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