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  Low-temperature ordering in the cluster compound (Bi8)T1[AlCl4]3

Knies, M., Kaiser, M., Lê Anh, M., Efimova, A., Doert, T., & Ruck, M. (2019). Low-temperature ordering in the cluster compound (Bi8)T1[AlCl4]3. Inorganics, 7: 45, pp. 1-9. doi:10.3390/inorganics7040045.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-BCED-F Version Permalink: http://hdl.handle.net/21.11116/0000-0003-BCF1-9
Genre: Journal Article

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 Creators:
Knies, Maximilian1, Author
Kaiser, Martin1, Author
Lê Anh, Mai1, Author
Efimova, Anastasia1, 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: Bismuth, Cluster compounds, Hexagonal perovskite, Ionic liquids, Low-valent compounds, Order-disorder transition, Orientational disorder, Polycations, Pseudosymmetry
 Abstract: The reaction of Bi, BiCl3, and TlCl in the ionic liquid [BMIm]Cl·4AlCl3 (BMIm = 1-n-butyl-3-methylimidazolium) at 180 °C yielded air-sensitive black crystals of (Bi8)Tl[AlCl4]3. X-ray diffraction on single crystals at roomtemperature revealed a structure containing 1 ∞ [Tl(AlCl 4)3]2- strands separated by isolated Bi82+ square antiprisms. The thallium(I) ion is coordinated by twelve Cl- ions of six [AlCl4]- groups, resulting in a chain of face-sharing [TlCl12]11- icosahedra. The Bi82+ polycation is disordered, simulating a threefold axis through its center and overall hexagonal symmetry (space group P63/m). Slowly cooling the crystals to 170 K resulted in increased order in the Bi8 cluster orientations. An ordered structure model in a supercell with a' = 2a, b' = 2b, c' = 3c and the space group P65 was refined. The structure resembles a hexagonal perovskite, with complex groups in place of simple ions. © 2019 by the authors.

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Language(s): eng - English
 Dates: 2019-03-272019-03-27
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.3390/inorganics7040045
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Title: Inorganics
Source Genre: Journal
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Publ. Info: Basel, Switzerland : MDPI
Pages: - Volume / Issue: 7 Sequence Number: 45 Start / End Page: 1 - 9 Identifier: ISSN: 2304-6740
CoNE: https://pure.mpg.de/cone/journals/resource/2304-6740