| A high-pressure single-crystal synchrotron diffraction study of NH(4)RbTe(4)O(9)·2H(2)O: stability of three different TeO(x) coordination polyhedra. | |
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MedLine Citation:
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PMID: 21979964 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The crystal structure of ammonium rubidium nonaoxotetratellurate(IV) dihydrate has been studied as a function of pressure up to 7.40 GPa. The ambient-pressure structure is characterized by the co-existence of three different Te-O polyhedra (TeO(3), TeO(4) and TeO(5)), which are connected to form layers. NH(4)(+), H(2)O and Rb(+) are incorporated between the layers. Both the Rb1 position, which is located on a twofold axis, and the Rb2 position are partially occupied. The three different types of coordination polyhedra around Te(4+) are stable up to at least 5.05 GPa. No phase transition is observed. The fit of the unit-cell volume as a function of pressure gives a zero-pressure bulk modulus of 34 (1) GPa with a zero-pressure volume of V(0) = 2620 (4) Å(3) [B' = 1.4 (2)]. |
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Authors:
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K Friese; P S Halasyamani; M Tolkiehn; A Grzechnik |
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Publication Detail:
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Type: Journal Article Date: 2011-09-02 |
Journal Detail:
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Title: Acta crystallographica. Section C, Crystal structure communications Volume: 67 ISSN: 1600-5759 ISO Abbreviation: Acta Crystallogr C Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-10-07 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8305826 Medline TA: Acta Crystallogr C Country: Denmark |
Other Details:
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Languages: eng Pagination: i45-i49 Citation Subset: IM |
Affiliation:
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Departamento Física Materia Condensada, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado 644, E-48080 Bilbao, Spain. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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