Low-Temperature Ordering in the Cluster Compound (Bi8)Tl[AlCl4]3
Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, D-01069 Dresden, Germany
Chair of Inorganic Chemistry, Brandenburg University of Technology Cottbus-Senftenberg, Universitätsplatz 1, D-01968 Senftenberg, Germany
Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, D-01187 Dresden, Germany
Author to whom correspondence should be addressed.
Received: 25 February 2019 / Revised: 18 March 2019 / Accepted: 18 March 2019 / Published: 27 March 2019
PDF [1912 KB, uploaded 27 March 2019]
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
. X-ray diffraction on single crystals at room temperature revealed a structure containing
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
icosahedra. The Bi82+
polycation is disordered, simulating a threefold axis through its center and overall hexagonal symmetry (space group P
). 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
’ = 2b
’ = 3c
and the space group P
was refined. The structure resembles a hexagonal perovskite, with complex groups in place of simple ions.
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Knies, M.; Kaiser, M.; Lê Anh, M.; Efimova, A.; Doert, T.; Ruck, M. Low-Temperature Ordering in the Cluster Compound (Bi8)Tl[AlCl4]3. Inorganics 2019, 7, 45.
Knies M, Kaiser M, Lê Anh M, Efimova A, Doert T, Ruck M. Low-Temperature Ordering in the Cluster Compound (Bi8)Tl[AlCl4]3. Inorganics. 2019; 7(4):45.
Knies, Maximilian; Kaiser, Martin; Lê Anh, Mai; Efimova, Anastasia; Doert, Thomas; Ruck, Michael. 2019. "Low-Temperature Ordering in the Cluster Compound (Bi8)Tl[AlCl4]3." Inorganics 7, no. 4: 45.
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