Study on the Equilibria of Chelate Formation and the Ion-association of Anionic Chelate of Germanium(IV) with 4-Nitrocatechol and 2-(4-Iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2H-tetrazolium Cation
| Autor: | Vanya Lekova, Kirila Stojnova |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
medicine.diagnostic_test
Chemistry Materials Science (miscellaneous) Extraction (chemistry) Distribution constant Aqueous two-phase system Structural formula Ion-association 010402 general chemistry 010403 inorganic & nuclear chemistry 01 natural sciences Medicinal chemistry 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Bromide Spectrophotometry medicine Chelation Physical and Theoretical Chemistry |
| Zdroj: | Russian Journal of Inorganic Chemistry. 64:1235-1241 |
| ISSN: | 1531-8613 0036-0236 |
| Popis: | The complex formation and the ion-association of the ion-pair formed between the anionic chelate of molybdenum(VI)‒3,5-dinitrocatechol (3,5-DNC) with the cation of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) in the liquid–liquid extraction system Mo(VI)‒3,5-DNC‒MTT‒H2O‒CHCl3 was studied by spectrophotometry. The optimum conditions for the chelate formation and extraction of the ion-associated complex Mo(VI)‒3,5-DNC‒MTT were established. The molar ratio of the components in the ion-associated complex Mo(VI)–3,5-DNC–MTT was determined by independent methods. The association process in aqueous phase and the extraction equilibria were investigated and quantitatively characterized. The following key constants of the processes were calculated: association constant, distribution constant, extraction constant and recovery factor. Based on this, a reaction scheme, a general formula and a structural formula of the complex were suggested. |
| Databáze: | OpenAIRE |
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