Počet záznamů: 1
Complexation of the cesium cation with nonactin: extraction and DFT study
- 1.0386148 - ÚMCH 2013 RIV HU eng J - Článek v odborném periodiku
Makrlík, E. - Toman, Petr - Vaňura, P.
Complexation of the cesium cation with nonactin: extraction and DFT study.
Journal of Radioanalytical and Nuclear Chemistry. Roč. 295, č. 1 (2013), s. 615-619. ISSN 0236-5731. E-ISSN 1588-2780
Grant CEP: GA ČR(CZ) GAP205/10/2280
Výzkumný záměr: CEZ:AV0Z40500505
Institucionální podpora: RVO:61389013
Klíčová slova: cesium * nonactin * complexation
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.415, rok: 2013
From extraction experiments and γ-activity measurements, the extraction constant corresponding to the equilibrium Cs+(aq) + A−(aq) + 1(nb) reversible arrow 1.Cs+(nb) + A−(nb) taking place in the two-phase water–nitrobenzene system (A− = picrate, 1 = nonactin; aq = aqueous phase, nb = nitrobenzene phase) was evaluated as log Kex (1.Cs+,A−) = 2.8 ± 0.1. Further, the stability constant of the 1.Cs+ complex in nitrobenzene saturated with water was calculated for a temperature of 25 °C: log βnb (1.Cs+) = 4.7 ± 0.1. Finally, by using quantum–mechanical DFT calculations, the most probable structure of the resulting cationic complex species 1.Cs+ was derived.
Trvalý link: http://hdl.handle.net/11104/0217257
Počet záznamů: 1