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Complexation of neutral phosphoryl-containing tripodand tris[(o-diphenylphosphinoylmethyl)phenoxyethyl]amine and analysis of its cationic selectivity to lithium, sodium, and potassium in acetonitrile: lithium selectivity and polynuclear complexesстатья
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Дата последнего поиска статьи во внешних источниках: 2 мая 2018 г.
- Авторы: Baulin V.E., Solov'ev V.P., Strakhova N.N., Kazachenko V.P., Zavel'skii V.O.
- Журнал: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
- Том: 22
- Номер: 4
- Год издания: 1996
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 238
- Последняя страница: 244
- Аннотация: New phosphoryl-contg. tripodand tris[(o-diphenylphosphinoylmethyl)phenoxyethyl]amine is synthesized. The stability consts., enthalpies, and entropies of tripodand complexation with lithium, sodium, and potassium thiocyanates in acetonitrile at 298 K are detd. The study on complexation by calorimetry, 7Li and 23Na NMR spectroscopy, and mass spectrometry suggests that ligand and lithium thiocyanate form, in addn. to the 1:1 complex, the polynuclear 2:1 and 3:1 (M:L) complexes, whereas the 1:1 and 1:2 complexes are formed in the case of sodium and potassium thiocyanates. A high podand selectivity to the lithium cation in acetonitrile compared to that for the sodium and potassium cations is due to the formation of polynuclear complexes.
- Добавил в систему: Соловьев Виталий Петрович