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Journal ArticleDOI

Determination of stability constants of ternary copper(II) complexes formed with picolinic acid and several amino acids

TL;DR: In this article, the formation of ternary complexes with their respective formation constants in the systems formed by copper (II), picolinic acid and the amino acids was studied.
Abstract: In this work, the formation of ternary complexes with their respective formation constants in the systems formed by copper (II), picolinic acid and the amino acids = histidine (His), aspartic acid ...
Citations
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Journal ArticleDOI
TL;DR: A comprehensive review of the coordination chemistry of metalloenzymes in the resistance development and modulatory potentials of metal-chelating and metal complex inhibitors for catalytic deactivation is presented in this paper .

8 citations

Journal ArticleDOI
TL;DR: A comprehensive review of the coordination chemistry of metalloenzymes in the resistance development and modulatory potentials of metal-chelating and metal complex inhibitors for catalytic deactivation is presented in this paper.

8 citations

Journal ArticleDOI
TL;DR: In this article, the formation of ternary complexes with their respective formation constants in the systems formed by copper (II), 2,6-pyridinedicarboxylic acid (H2Dipi) and the amino acids was studied.
Abstract: In this work, the formation of ternary complexes with their respective formation constants in the systems formed by copper (II), 2,6-pyridinedicarboxylic acid (H2Dipi) and the amino acids = histidi...

7 citations


Cites background or methods from "Determination of stability constant..."

  • ...This signal is attributed to Cu since dipicolinic acid [10], glutamic acid [20,35] and the other amino acids [20] have no signals in the evaluated potential range....

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  • ...These differences in electrochemical behaviour are produced by the coordination of the ligands to the metallic centre of Cu (II), which significantly modify the electroactivity of the metal [10,20,38]....

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  • ...Comparison of the formation constants of the complexes [Cu(Pic)(L)(H2O)2] [20] and [Cu(Dipi)(L)(H2O)] − formed in the Cu (II) -Pic-amino acid and Cu (II) -Dipi-amino acid systems....

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  • ...The ionisation constants of the ligands, the stability constants of the hydroxo complexes of Cu (II), and the stability constants of the binary complexes formed in the systems Cu(II)H2Dipi and Cu(II)-amino acid were determined by our research group [20,21] at the same experimental conditions used in this work (25 oC and 1....

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  • ...Based on bibliography [20,24] it is expected that the spectra changes are product of the deprotonation, and subsequent coordination of the imidazole ring....

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References
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Book
01 Jan 1968

8,072 citations

Book
01 Jan 1989
TL;DR: In this paper, the principles of reaction in solution are discussed and the basis of separarative methods are discussed, as well as the safety units of Reagent Purity and Reagent Reactions in Solution.
Abstract: 1. Preface to First Edition. 2. Preface to Sixth Edition. 3. Safety Units. 4. Reagent Purity. 5. Introduction. 6. Fundamental Theoretical Principles of Reactions in Solution. 7. Common Apparatus & Basic Techniques. 8. Statistics, Introduction to Chemometrics. 9. Sampling. 10. The Basis of Separative Methods. 11. Thin Layer Chromatography. 12. Liquid Chromatography. 13. Gas Chromatography. 14. Titrimetric Analysis. 15. Gravimetric Analysis. 16. Thermal Analysis. 17. Direct Electroanalytical Methods. 18. Nuclear Magnetic Resonance Spectroscopy. 19. Atomic Absorption Spectroscopy. 20. Atomic Emission Spectroscopy. 21. Molecular Electronic Spectroscopy. 22. Vibrational Spectroscopy. 23. Mass Spectrometry. Appendices.

2,161 citations

Journal ArticleDOI
TL;DR: In this paper, voltammetric methods were used to probe the interaction (electrostatic or intercalative) of metal complexes, ML 3 3+/2+, with calf thymus DNA.
Abstract: Voltammetric methods were used to probe the interaction (electrostatic or intercalative) of metal complexes, ML 3 3+/2+ , with calf thymus DNA. Binding constants (K n+ ) and binding site sizes (s) were determined from voltammetric data. The exact magnitude for the parameters depends on whether the ML 3 3+/2+ /DNA reaction is assumed to be static (S) or mobile (M) within the characteristic time of a voltammetric experiment

1,567 citations


"Determination of stability constant..." refers background in this paper

  • ...This is due to the coordination of the ligands to the metallic centre of Cu (II), which significantly modifies the electroactivity of the metal [34,35]....

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Journal ArticleDOI
TL;DR: Hyperquad simulation and speciation (HySS) as mentioned in this paper is a computer program written for the Windows operating system on personal computers which provides simulating titration curves and a system for providing speciation diagrams.

1,400 citations


"Determination of stability constant..." refers methods in this paper

  • ...The species distribution diagrams were generated using the HYSS computational program [19] with the values of βpqrs, which are summarised in Tables 2–3....

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