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Synthesis, IR spectroscopy and crystal structure of [(UO2)(2){Be(H2O)(2) (PO4)(2)}] center dot (H2O), the first compound with a trimer beryllophosphate anionстатья
Информация о цитировании статьи получена из
Web of Science,
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.
- Авторы: Dal Bo Fabrice, Aksenov Sergey M., Hatert Frederic, Burns Peter C.
- Журнал: Zeitschrift für Kristallographie – Crystalline Materials
- Том: 233
- Номер: 6
- Год издания: 2018
- Издательство: Walter de Gruyter
- Местоположение издательства: Berlin, Germany
- Первая страница: 391
- Последняя страница: 398
- DOI: 10.1515/zkri-2017-2113
- Аннотация: The first uranyl beryllophosphate, [(UO2)(2)(Be-(H2O)(2)(PO4)}]center dot(H2O), has been synthesized under hydro thermal conditions at 200 degrees C. The monoclinic unit-cell parameters are: a = 9.3361(1), b= 8.85/150), c= 9.6592(10) A, [a=93.211(1), V=797.21(6) angstrom(3), space group P2/n, Z=2. The crystal structure has been solved by direct methods and refined to final R-1=4.920/0 using 1294 I > 36(I) reflections in the anisotropic approximation. The structure consists of sheets of UrO(5) pentagonal bipyramids and PO4 tetrahedra. UrO(5) bipyramids are linked by edge -sharing to form infinite chains. Adjacent chains of UrO(5) bipyramids are connected by sharing alternating edges of uranyl bipyramids with PO4, tetrahedra. The resulting sheets are based on the well-known uranophane anion-topology. Be atoms are tetrahedrally coordinated by two oxygen atoms of PO4 tetrahedra and two water molecules in the interlayer space. One isolated water molecule also occurs in the interlayer space, where it is held in position by H bonds. The connection between the phosphorus and beryllium tetrahedra leads to formation of an unbranched trimer [BeP2O8(H2O))(4)-observed for the first time in inorganic oxysalts.
- Добавил в систему: Аксенов Сергей Михайлович