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  The crystal structures of α-Rb7Sb3Br16, α- And β-Tl7Bi3Br16 and their relationship to close packings of spheres

Chang, J.-H., Doert, T., & Ruck, M. (2020). The crystal structures of α-Rb7Sb3Br16, α- And β-Tl7Bi3Br16 and their relationship to close packings of spheres. Zeitschrift füt Kristallographie-Crystalline Materials, 235(8-9), 255-261. doi:10.1515/zkri-2020-0013.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-D48E-B Version Permalink: http://hdl.handle.net/21.11116/0000-0007-19A5-3
Genre: Journal Article
Alternative Title : Zeitschrift fur Kristallographie

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 Creators:
Chang, Jen-Hui1, Author
Doert, Thomas1, Author
Ruck, Michael2, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Michael Ruck, Max Planck Fellow, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863444              

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Free keywords: bromido-antimonate(III), bromido-bismuthate(III), close packing, crystal structure, halogenometalates
 Abstract: Yellow prismatic crystals of rubidium bromido-antimonate(III) Rb7Sb3Br16 and of two different modifications of thallium bromido-bismuthate(III) Tl7Bi3Br16 were obtained by solvent-free synthesis and by precipitation from acidic aqueous solutions. X-ray diffraction analyses revealed the Tl7Bi3I16-type for α-Tl7Bi3Br16 (orthorhombic, Cmcm, a = 2324.31(8) pm, b = 1346.69(4) pm, c = 3460.0(1) pm; Pearson symbol oC312) and a new structure type for β-Tl7Bi3Br16 (monoclinic, C2/c, a = 2331.87(5) pm, b = 1343.33(3) pm, c = 3546.01(7) pm, β = 102.708(1)°; mC312). The antimonate Rb7Sb3Br16 adopts the Tl7Bi3I16-type, too (orthorhombic, Cmcm, a = 2347.16(3) pm, b = 1357.89(5) pm, c = 3539.47(9) pm; oC312). The crystal structures of α- and β-Tl7Bi3Br16 comprise alternating slabs of isolated [BiBr6]3- octahedra and [Bi2Br10]4- octahedra pairs. Both structure types are hierarchically organized and can be regarded as sphere close packing with the same stacking sequence, if octahedra and octahedra pairs are replaced by spheres of equal size. The structural relationship between the Tl7Bi3I16-type and the hydrate Na7Bi3Br16 · 18H2O, which comprises similar structural features, is discussed. © 2020 Walter de Gruyter GmbH, Berlin/Boston.

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Language(s): eng - English
 Dates: 2020-07-082020-07-08
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1515/zkri-2020-0013
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Title: Zeitschrift füt Kristallographie-Crystalline Materials
  Other : Z. Kristallogr. - Cryst. Mater.
Source Genre: Journal
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Publ. Info: Berlin/Boston : de Gruyter
Pages: - Volume / Issue: 235 (8-9) Sequence Number: - Start / End Page: 255 - 261 Identifier: ISSN: 2194-4946
CoNE: https://pure.mpg.de/cone/journals/resource/2194-4946