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  The Subbromide Bi5Br4 – On the Existence of a Hidden Phase

Pabst, F., Chang, J.-H., Finzel, K., Kohout, M., Schmidt, P., & Ruck, M. (2020). The Subbromide Bi5Br4 – On the Existence of a Hidden Phase. Zeitschrift für anorganische und allgemeine Chemie, 646(3), 149-155. doi:10.1002/zaac.201800149.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-4FDE-A Version Permalink: http://hdl.handle.net/21.11116/0000-0006-4EEC-A
Genre: Journal Article

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 Creators:
Pabst, Falk1, Author
Chang, Jen-Hui1, Author
Finzel, Kati1, Author
Kohout, Miroslav2, Author              
Schmidt, Peer1, Author
Ruck, Michael3, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Miroslav Kohout, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863417              
3Michael Ruck, Max Planck Fellow, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863444              

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 Abstract: Black and irregularly shaped crystals of the bismuth-rich bromide Bi5Br4 were obtained as a by-product of the reaction of CsBr, Bi, and BiBr3. X-ray diffraction on a single-crystal revealed its orthorhombic structure with the space group Pmmn (no. 59) and lattice parameters a = 1800.0(2) pm, b = 1476.1(1) pm, and c = 924.5(2) pm at 296 K. The structure is composed of Bi8 2+ and Bi9 5+ polycations and bromidobismuthate(III) anions according to the structured formula Bi5Br4 = Bi20Br16 = Bi8 2+Bi9 5+[BiBr5]2–[Bi2Br11]5–. Bi5Br4 is the bismuth-richest among the bismuth subhalides containing isolated polycations. Extensive differential scanning calorimetry studies indicate that Bi5Br4 decomposes at 262 °C, i.e. one degree below the bismuth-rich eutectic at 263 °C. All attempts towards a rational synthesis yielded predominantly the neighboring phases BiBr and Bi6Br7. © 2019 The Authors published by Wiley-VCH Verlag GmbH Co. KGaA, Weinheim

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Language(s): eng - English
 Dates: 2020-02-142020-02-14
 Publication Status: Published in print
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 Identifiers: DOI: 10.1002/zaac.201800149
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Title: Zeitschrift für anorganische und allgemeine Chemie
  Other : J. Inorg. Gen Chem.
  Other : Journal of Inorganic and General Chemistry
  Abbreviation : Z. Anorg. Allg. Chem.
Source Genre: Journal
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Publ. Info: Leipzig, Weinheim : Verlag Johann Ambrosius Barth / Wiley-VCH
Pages: - Volume / Issue: 646 (3) Sequence Number: - Start / End Page: 149 - 155 Identifier: Other: 1521-3749
ISSN: 0044-2313
CoNE: https://pure.mpg.de/cone/journals/resource/954925453895