(H3O)3Sb2Br9: the first member of the M3E2X9 structure family with oxonium 
cations

Chang, Jen-Hui; Doert, Thomas; Ruck, Michael

doi:10.1107/S2053229616017198

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(H₃O)₃Sb₂Br₉: the first member of the M₃E₂X₉ structure family with oxonium cations

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Ruck, Michael
Michael Ruck, Max Planck Fellow, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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引用

Chang, J.-H., Doert, T., & Ruck, M. (2016). (H₃O)₃Sb₂Br₉: the first member of the M₃E₂X₉ structure family with oxonium cations. Acta Crystallographica, Section C: Crystal Structure Communications, 72, 966-970. doi:10.1107/S2053229616017198.

引用: https://hdl.handle.net/11858/00-001M-0000-002C-3EBB-F

要旨

(H3O)(3)Sb2Br9 [trihydroxonium enneabromidodiantimonate(III)] is the first representative of the M3E2X9 family (M = cation, E = Sb and Bi, and X = Br and I) with oxonium cations. The metastable compound was obtained in trace amounts from a solution of CsBr and SbBr3 in concentrated aqueous HBr. Single crystals were isolated from the mother liquor and investigated by single-crystal X-ray diffraction at 100 K. (H3O)(3)Sb2Br9 crystallizes with the Tl3Bi2I9 structure type, which is a distorted defect variant of cubic perovskite. The crystal structure comprises characteristic infinity(2)[SbBr3Br3/2] double layers of corner-sharing SbBr6 octahedra with a [001] stacking direction. Due to the small size of the H3O+ cation and O-H center dot center dot center dot Br hydrogen bonding, the octahedra are tilted.