Author:
Chang Jen-Hui,Doert Thomas,Ruck Michael
Abstract
(H3O)3Sb2Br9[trihydroxonium enneabromidodiantimonate(III)] is the first representative of theM3E2X9family (M= cation,E= Sb and Bi, andX= Br and I) with oxonium cations. The metastable compound was obtained in trace amounts from a solution of CsBr and SbBr3in concentrated aqueous HBr. Single crystals were isolated from the mother liquor and investigated by single-crystal X-ray diffraction at 100 K. (H3O)3Sb2Br9crystallizes with the Tl3Bi2I9structure type, which is a distorted defect variant of cubic perovskite. The crystal structure comprises characteristic2∞[SbBr3Br3/2] double layers of corner-sharing SbBr6octahedra with a [001] stacking direction. Due to the small size of the H3O+cation and O—H...Br hydrogen bonding, the octahedra are tilted.
Publisher
International Union of Crystallography (IUCr)
Subject
Materials Chemistry,Inorganic Chemistry,Physical and Theoretical Chemistry,Condensed Matter Physics
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