caa a22 4500 465732690 CHVBK 20180323111745.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF02039598 doi (NATIONALLICENCE)springer-10.1007/BF02039598 NMR studies of uranyl benzenesulfonate solvation and phase diagram of uranyl benzenesulfonate-water-tributyl phosphate system [Elektronische Daten] [E. Ashevaskaya, L. Scherbakova, V. Scherbakov] Uranyl hydration and solvation numbers of uranyl benzenesulfonate (BSU) aqueous-organic solutions have been determined by means of dynamic NMR spectroscopy technique. Three aqua-complexes have been found to exist in aqueous-acetone solution: [UO2 (U6H5SO3)2·4H2O] and [UO2(C6H5SO3)2·(H2O)n] where n=1 or 2 and anions are bridging bidentate. Transition from [UO2 (C6H5SO3)2·4H2O] to the higher aqua complexes begins at P>40. There is a disolvate in the non-aqueous solution of BSU in tri-n-butyl phosphate (TBP). Composition of aqueous and organic phase of the BSU-water-TBP ternary system has been determined at room temperature, allowing to produce the phase diagram of the system. The binodale position is related to the anion amphiphilicity. The solvation number determined for BSU in the organic phases corresponds exactly to the low temperature data and allows to observe BSU dehydration and desolvation in the region of mutual dissolution of water and the organic phase, as well as TBP and the aqueous phase. Akadémiai Kiadó, 1990 Ashevaskaya E. Chemical Department, Leningrad State University, Leningrad, USSR aut Scherbakova L. Khlopin Radium Institute, Leningrad, USSR aut Scherbakov V. Khlopin Radium Institute, Leningrad, USSR aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 143/2(1990-12-01), 307-316 0236-5731 143:2<307 1990 143 10967 https://doi.org/10.1007/BF02039598 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02039598 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ashevaskaya E. Chemical Department, Leningrad State University, Leningrad, USSR aut NATIONALLICENCE 700 1- Scherbakova L. Khlopin Radium Institute, Leningrad, USSR aut NATIONALLICENCE 700 1- Scherbakov V. Khlopin Radium Institute, Leningrad, USSR aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 143/2(1990-12-01), 307-316 0236-5731 143:2<307 1990 143 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer