| | 1 | Author
| HeinzW. Rotter, Gerhard Thiele | Requires cookie* | | | Title
| Fehlordnung von Kationen und Kristallwasser bei kubischen Alkalitetrabromo-und -iodothallaten(III) Disorder of Cations and Water Molecules in Cubic Tetrabromo-and -iodothallates  | | | | Abstract
| Tetrabromo-and -iodothallates(III) of the alkali cations crystallise from aqueous solutions as cubic hydrates MTlX4-nH20 (M = Li, Na, K, Rb, Cs, NH4; X — Br, I; n — 1-2). The tetraiodothallates retain their cubic structure on dehydratisation, while the tetrabromothallates undergo structural changes. The X-ray structure analyses of RbTlBr4 • H20, NH4TlBr4 • 2HoO and KTlBr4 • 2H20 (—50 °C) showed that these com-pounds consist of a three-dimensional framework of TlBr4 tetrahedra and MBrjo ikosahedra which reminds of zeolites. In cavities of this framework 2/3 of the alkali cations and the crystal water molecules are accommodated in a disordered manner. | | | |
Reference
| Z. Naturforsch. 37b, 995—1004 (1982); eingegangen am 3. März 1982 | | | |
Published
| 1982 | | | |
Keywords
| Thallium, Tetrabromothallate, Disorder, Tetraiodothallate, Crystal Structure | | | |
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| default:Reihe_B/37/ZNB-1982-37b-0995.pdf | | | | Identifier
| ZNB-1982-37b-0995 | | | | Volume
| 37 | |
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