Study on the Equilibria of the Complex Formation of the Ion-pair of Germanium(IV) with 4-Nitrocatechol and 1,4-Diphenyl-3-(phenylamino)-1H-1,2,4-triazole
| Autor: | Vidka Divarova, Vanya Lekova, Petya Racheva, Kirila Stojnova |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
medicine.diagnostic_test
Chemistry chelate formation extraction equilibriums Extraction (chemistry) Distribution constant germanium(IV) Aqueous two-phase system Analytical chemistry 1 2 4-Triazole nitron ion-pair Ion lcsh:Chemistry chemistry.chemical_compound lcsh:QD1-999 Spectrophotometry Reagent medicine Physical chemistry Chelation |
| Zdroj: | Acta Chimica Slovenica, Vol 64, Iss 2, Pp 365-372 (2017) |
| ISSN: | 1318-0207 |
| Popis: | The complex formation of the ion-pair formed between the anionic chelate of Ge(IV)-4-nitrocatechol (4-NC) and the cation of 1,4-diphenyl-3-(phenylamino)-1H-1,2,4-triazole (Nitron, Nt) in the liquid-liquid extraction system Ge(IV)-4-NC-Nt-H2O-CHCl3 was studied by spectrophotometry. The optimum extraction-spectrophotometric conditions for the complex formation were established. The validity of Beer's law was checked and some analytical characteristics of the system were calculated. The effect of co-existing ions and reagents on the process of complex formation was investigated. The association process in aqueous phase and the extraction equilibria were studied and quantitatively characterized. The following key constants of the processes were calculated: association constant, distribution constant, extraction constant and recovery factor. The molar ratio of the reagents was determined by independent methods. A reaction scheme and a general formula of the complex were suggested. |
| Databáze: | OpenAIRE |
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