ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
New Metal Oxides with Doubles of Tetrahedra as Building Units: Rb6[Tl2O6] and Cs6[In2O6]We prepared the hitherto unknown Rb6[Tl2O6] and Cs6[In2O6] by heating mixtures of Tl2O3 and RbO0.60 (Rb:Tl = 3.5:1) as well as In2O3 and CsO0.53 (Cs:In = 3.5:1) as single crystals [closed Ag-cylinder, 650°C, 14 d]. The single crystals of Rb6[Tl2O6] are yellow, those of Cs6[In2O6] pale yellow, all transparent and rude. The new type of structure was elucidated by 4-circle-diffractometer (PW 1100) data.Rb6[Tl2O6]: P21/a; a = 1145,7(3), b = 713,3(1), c = 783,9(2) pm, β = 93,73° (2), Z = 2; Ag-Kα, 2100 out of 2531 I0(hkl), R = 9,6% and Rw = 8,9%.Cs6[In2O6]: P21/a; a = 1178,5(4), b = 730,7(2), c = 816,3(2) pm, β = 95,38° (3), Z = 2; Mo-Kα, 1584 out of 2032 I0(hkl), R = 9,25%, and Rw = 8,44%.The Madelung Part of Lattice Energy, MAPLE, is calculated and discussed.
Notes:
Neu dargestellt wurden Rb6[Tl2O6] und Cs6[In2O6] durch Tempern inniger Gemenge von Tl2O3 mit RbO0,60 (Rb:Tl = 3,5:1) bzw. In2O3 mit CsO0,53 (Cs:In = 3,5:1) als Einkristalle [geschl. Ag-Zylinder, 650°C, 14 d]. Die Einkristallen von Rb6[Tl2O6] sind gelb, die von Cs6[In2O6] hellgelb, alle durchsichtig und derb. Der neue Strukturtyp wird durch Einkristalldaten (Vierkreisdiffraktometer PW 1100) belegt.Rb6[Tl2O6]: P21/a; a = 1145,7(3), b = 713,3(1), c = 783,9(2) pm, β = 93,73° (2), Z = 2; Ag-Kα, 2100 von 2531 I0(hkl), R = 9,6% und Rw = 8,9%.Cs6[In2O6]: P21/a; a = 1178,5(4), b = 730,7(2), c = 816,3(2) pm, β = 95,38° (3), Z = 2; Mo-Kα, 1584 von 2032 I0(hkl), R = 9,25%, Rw = 8,44%.Der Madelunganteil der Gitterenergie, MAPLE, wird für beide berechnet und diskutiert.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19875470422
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