Author:
Mbarek Aicha,Edhokkar Fadhila
Abstract
The crystal structure of strontium diarsenate has been reinvestigated from single-crystal X-ray diffraction data. In contrast to the previous determinations of this structure [Weilet al.(2009).Solid State Sci.11, 2111–2117; Edhokkaret al.(2012).Mater. Sci. Eng.,28, 012017] and to all isotypicA2B2O7compounds that crystallize in the space groupP41, the current redetermination revealed theP43enantiomorph of Sr2As2O7with a purity of 96.3 (8)%. The crystal structure is made up from two eclipsed As2O7diarsenate groups (symmetry 1) with characteristically longer As—O bridging bonds [1.756 (4)–1.781 (4) Å] than the terminal As—O bonds [1.636 (4)–1.679 (4) Å] and four Sr2+sites with coordination numbers ranging from seven to nine. The building units are arranged in sheets parallel to (001).
Publisher
International Union of Crystallography (IUCr)
Subject
Condensed Matter Physics,General Materials Science,General Chemistry
Reference13 articles.
1. The crystal structure of beta strontium pyrovanadate
2. Redetermination of the β-Ca2P2O7 structure
3. Brandenburg, K. (1999). DIAMOND. Crystal Impact GbR, Bonn, Germany.
4. Bruker (2008). SADABS, APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
5. Dicerium disilicate, Ce2[Si2O7]
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献