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

Knies M, Kaiser M, Le Anh M, Efimova A, Doert T, Ruck M (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Inorganics MDPI

Book Volume: 7

Article Number: 45

Journal Issue: 4

DOI: 10.3390/inorganics7040045

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.

Involved external institutions

Technische Universität Dresden DE Germany (DE) Brandenburgische Technische Universität Cottbus-Senftenberg (BTU) DE Germany (DE)

How to cite

APA:

Knies, M., Kaiser, M., Le Anh, M., Efimova, A., Doert, T., & Ruck, M. (2019). Low-temperature ordering in the cluster compound (Bi8)Tl[AlCl4]3. Inorganics, 7(4). https://doi.org/10.3390/inorganics7040045

MLA:

Knies, Maximilian, et al. "Low-temperature ordering in the cluster compound (Bi8)Tl[AlCl4]3." Inorganics 7.4 (2019).

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