Crystal structure of strontium perchlorate anhydrate, Sr(ClO(4))(2), from laboratory powder X-ray diffraction data

The crystal structure of strontium perchlorate anhydrate, Sr(ClO(4))(2), was determined and refined from laboratory powder X-ray diffraction data. The material was obtained by dehydration of Sr(ClO(4))(2)·3H(2)O at 523 K for two weeks. It crystallizes in the ortho­rhom­bic space group Pbca and is isotypic with Ca(AlD(4))(2) and Ca(ClO(4))(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 Sr(2+) cations and isolated ClO(4) (−) tetra­hedra. The Sr(2+) cation is coordinated by eight O atoms from eight ClO(4) (−) tetra­hedra. The validity of the crystal structure model for Sr(ClO(4))(2) anhydrate was confirmed by the bond valence method.