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International Union of Crystallography, Acta Crystallographica Section E: Crystallographic Communications, 4(75), p. 447-450, 2019

DOI: 10.1107/s2056989019003335

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Crystal structure of strontium perchlorate anhydrate, Sr(ClO4)2, from laboratory powder X-ray diffraction data

Journal article published in 2019 by Jooeun Hyoung ORCID, Hyeon Woo Lee, So Jin Kim, Hong Rim Shin, Seung-Tae Hong ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The crystal structure of strontium perchlorate anhydrate, Sr(ClO4)2, was determined and refined from laboratory powder X-ray diffraction data. The material was obtained by dehydration of Sr(ClO4)2·3H2O at 523 K for two weeks. It crystallizes in the orthorhombic space group Pbca and is isotypic with Ca(AlD4)2 and Ca(ClO4)2. The asymmetric unit contains one Sr, two Cl and eight O sites, all on general positions (Wyckoff position 8c). The crystal structure consists of Sr2+ cations and isolated ClO4 − tetrahedra. The Sr2+ cation is coordinated by eight O atoms from eight ClO4 − tetrahedra. The validity of the crystal structure model for Sr(ClO4)2 anhydrate was confirmed by the bond valence method.