Schwinghammer, Vanessa F. and Gaertner, Stefanie (2024) [Tl7]<SUP>7-</SUP> Clusters in Mixed Alkali Metal Thallides Cs7.29K5.71Tl13 and Cs3.45K3.55Tl7. INORGANIC CHEMISTRY, 63 (43). pp. 20078-20082. ISSN 0020-1669, 1520-510X
Full text not available from this repository.Abstract
Investigations in the ternary system Cs-K-Tl resulted in the unexpected formation of new ternary thallides Cs7.29K5.71Tl13 and Cs3.45K3.55Tl7. Single crystal X-ray structure analyses of both compounds reveal the presence of isolated Tl cluster units. Cs7.29K5.71Tl13 crystallizes in the monoclinic space group C2/c (a = 30.7792(9) angstrom, b = 11.000(2) angstrom, c = 14.0291(4) angstrom, beta = 112.676(4)degrees , Z = 4) and contains [Tl-6](6-) and [Tl-7](7)- clusters as thallium subunits. Cs3.45K3.55Tl7 crystallizes in the tetragonal space group I41/a (a = 13.6177(2) angstrom, c = 25.5573(8) angstrom, Z = 8) and contains [Tl7]7- clusters exclusively. The formation of Cs7.29K5.71Tl13 is obtained after slow cooling in addition to that of Cs3.45K3.55Tl7 and can be suppressed by quenching the stoichiometric mixture. First dissolution experiments in liquid ammonia suggest thallium and amide as final oxidation products. Full relativistic band structure calculations of Cs4K3Tl7 and Cs8K5Tl13 showed a (pseudo) band gap around E-F for both compounds.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ZINTL-KLEMM CONCEPT; STRUCTURAL CHEMISTRY; PHASE; NATL; KTL; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik Chemistry and Pharmacy > Institut für Anorganische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 17 Jul 2025 06:46 |
| Last Modified: | 17 Jul 2025 06:46 |
| URI: | https://pred.uni-regensburg.de/id/eprint/63401 |
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