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Journals / Turkish Journal of Chemistry / 2013 / Cilt: 37 - Sayı: 3

Potentiometric study of equilibrium constants of a novel triazine–thione derivative and its stability constants with $Hg^{2+},Cu^{2+},Ni^{+2},Pb^{2+},$ and $Zn^{2+}$ metal ions in ethanol and water mixed

Fatih POLAT
Hayati SARI
Hasan ATABEY
Alaaddin ÇUKUROVALI
Pages
439–448
Publication Date
2022-11-05
DOI
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⚡ TL;DR(Too Long; Didn't Read)

According to the potentiometric and spectrophotometric results, the HPT and $Hg^{2+}$ combination formed a selective and highly stable complex at pH 7.

📌 3 Key Takeaways

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Objective & Hypothesis:The deprotonation constants of 5-hydroxy-5,6-di-pyridin-2-yl-4,5-dihydro-2H-[1,2,4] triazine-3-thione (HPT) and the stability constants of its $Hg^{2+},Cu^{2+},Ni^{+2},Pb^{2+},$ and $Zn^{2+}$ ion complexes were studied in 20% ethanol and water mixed at 25 ± 0.1 ◦C and ionic strength (I) of 0.1 M supported by NaCl.
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Key Findings & Data:Four pKa values of HPT were determined: 3.58, 6.30, 9.23, and 9.69.
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Conclusion & Impact:According to the potentiometric and spectrophotometric results, the HPT and $Hg^{2+}$ combination formed a selective and highly stable complex at pH 7.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The deprotonation constants of 5-hydroxy-5,6-di-pyridin-2-yl-4,5-dihydro-2H-[1,2,4] triazine-3-thione (HPT) and the stability constants of its $Hg^{2+},Cu^{2+},Ni^{+2},Pb^{2+},$ and $Zn^{2+}$ ion complexes were studied in 20% ethanol and water mixed at 25 ± 0.1 ◦C and ionic strength (I) of 0.1 M supported by NaCl. Four pKa values of HPT were determined: 3.58, 6.30, 9.23, and 9.69. In various pH conditions, the different complex forms were formulated as ML, MHL, $MH_2$ L, $MH_3$ L, $MH_4$ L, and $MH_{-2}$L between $Hg^{2+},Ni^{2+},Cu^{+2},Pb^{2+},$ and $Zn^{2+}$ ions and HPT. According to the potentiometric and spectrophotometric results, the HPT and $Hg^{2+}$ combination formed a selective and highly stable complex at pH 7.

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Cite This Article

POLAT, F., SARI, H., ATABEY, H., ÇUKUROVALI, A. (2022). Potentiometric study of equilibrium constants of a novel triazine–thione derivative and its stability constants with $Hg^{2+},Cu^{2+},Ni^{+2},Pb^{2+},$ and $Zn^{2+}$ metal ions in ethanol and water mixed. Turkish Journal of Chemistry, Cilt: 37 - Sayı: 3, 439–448. https://ajindex.com/articles/595987

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