دورية أكاديمية
Speciation Studies of Bifunctional 3-Hydroxy-4-Pyridinone Ligands in the Presence of Zn2+ at Different Ionic Strengths and Temperatures
| العنوان: | Speciation Studies of Bifunctional 3-Hydroxy-4-Pyridinone Ligands in the Presence of Zn2+ at Different Ionic Strengths and Temperatures |
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| المؤلفون: | Anna Irto, Paola Cardiano, Salvatore Cataldo, Karam Chand, Rosalia Maria Cigala, Francesco Crea, Concetta De Stefano, Giuseppe Gattuso, Nicola Muratore, Alberto Pettignano, Silvio Sammartano, Maria Amélia Santos |
| المساهمون: | Irto, Anna, Cardiano, Paola, Cataldo, Salvatore, Chand, Karam, Cigala, Rosalia Maria, Crea, Francesco, DE STEFANO, Concetta, Gattuso, Giuseppe, Muratore, Nicola, Pettignano, Alberto, Sammartano, Silvio, Amélia Santos, Maria |
| سنة النشر: | 2019 |
| المجموعة: | Università degli Studi di Messina: IRIS |
| مصطلحات موضوعية: | 3 hydroxy 4 pyridinone, speciation, acid base propertie, extended Debye Hückel, Zn-complexation, specific ion interaction theory, van’t Hoff equation, sequestering ability |
| الوصف: | The acid–base properties of two bifunctional 3-hydroxy-4-pyridinone ligands and their chelating capacity towards Zn2+, an essential bio-metal cation, were investigated in NaCl aqueous solutions by potentiometric, UV-Vis spectrophotometric, and 1HNMR spectroscopic titrations, carried out at 0.15 < I/mol L-1 < 1.00 and 288.15 < T/K < 310.15. A study at I = 0.15 mol L1 and T = 298.15 K was also performed for other three Zn2+/Lz systems, with ligands belonging to the same family of compounds. The processing of experimental data allowed the determination of protonation and stability constants, which showed accordance with the data obtained from the dierent analytical techniques used, and with those reported in the literature for the same class of compounds. ESI-MS spectrometric measurements provided support for the formation of the dierent Zn2+/ligand species, while computational molecular simulations allowed information to be gained on the metal–ligand coordination. The dependence on ionic strength and the temperature of equilibrium constants were investigated by means of the extended Debye–Hückel model, the classical specific ion interaction theory, and the van’t Hoff equations, respectively. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | ELETTRONICO |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/pmid/31726704; info:eu-repo/semantics/altIdentifier/wos/WOS:000501529700073; volume:24; issue:22; firstpage:1; lastpage:29; numberofpages:29; journal:MOLECULES; http://hdl.handle.net/11570/3147522Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85075008149; https://www.mdpi.com/1420-3049/24/22/4084Test |
| DOI: | 10.3390/molecules24224084 |
| الإتاحة: | https://doi.org/10.3390/molecules24224084Test http://hdl.handle.net/11570/3147522Test https://www.mdpi.com/1420-3049/24/22/4084Test |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.E460B802 |
| قاعدة البيانات: | BASE |
| DOI: | 10.3390/molecules24224084 |
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