Formation constants of chromium(III), scandium(III) and yttrium(III) complexes of some hydroxy naphthoic acids
| Autor: | Mehmet Suat Aksoy, Rahmiye Aydın, Ulviye Özer, Naciye Türkel |
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| Přispěvatelé: | Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü., Aksoy, Mehmet Suat, Aydın, Rahmiye, Türkel, Naciye, Özer, Ulviye Yücelik |
| Rok vydání: | 2005 |
| Předmět: |
Chromium
Stabilities Unclassified drug Equilibrium Carboxylic acid Inorganic chemistry Formation constant Dissociation-contants Hydroxyaromatic ligands chemistry.chemical_element Carboxylic-acid Naphthols Naphthoic acid Beryllium Electrospray Ionization Complexation Ionic strength Drug Discovery Yttrium Scandium Water pollutant Proton transport Spectroscopy chemistry.chemical_classification Aqueous solution Chromium scandium Pharmacology & pharmacy 3 hydroxy 2 naphthoic acid Aqueous-solution 1 hydroxy 2 naphthoic acid Complex formation General Chemistry General Medicine Chemistry multidisciplinary Stoichiometry Chemistry Copper(II) chemistry Stability constants of complexes Naphthalene derivative Potentiometry Chemistry medicinal Derivatives Beryllium(II) |
| Zdroj: | Chemicalpharmaceutical bulletin. 53(5) |
| ISSN: | 0009-2363 |
| Popis: | The complexes of chromium(III), scandium(III) and yttrium(Ill) formed by 1-hydroxy-2-naphthoic acid (1,2-HNA: H2L) and 3-hydroxy-2-naphthoic acid (3,2-HNA: H2L) were investigated by potentiometry and spectroscopy at 25 +/- 0.1 degrees C and at an ionic strength of 0.1 m KNO3 in 50% ethanol-water (v/v) medium. The stoichiometries of these three M(III) complexes formed with these hydroxy-naphthoic acids and with hydroxo ion were defined and their formation constants were determined and compared. Thus, the removing capacities of these ligands could be examined by calculating the equilibrium concentration of Cr(III) that exists in the discharge water of various industries since Cr(III) ions are the main pollutants present during waste water treatment in our city, Bursa. |
| Databáze: | OpenAIRE |
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