ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
New Rubidium Lithium Zincates: RbLiZnO2 and RbLiZn2O3For the first time colourless single crystals of RbLiZnO2 (A) and RbLiZn2O3 (B) have been prepared. Both crystallize tetragonally, A: space group I4/mmm, Z = 2, a = 351.84(4), c = 1153.3(2) pm; B: space group P42/mnm, Z = 4, a = 1 033.8(1), c = 342.8(1) pm. The crystal structures have been determined from four circle diffractometer data (MoKα; A: 155 hkl, R = 7.9%, Rw = 7.6%; B: 384 hkl, R = 7.0%, Rw = 4.6%). RbLiZnO2 has the BaZn2P2 type of structure while RbLiZn2O3 exhibits a new structure type with linear chains of face shared cubes ∞1[O4/2RbO4/2RbO4/2] as characteristic feature. For both oxides the Madelung part of lattice energy (MAPLE), and effective coordination numbers (ECoN) are calculated.
Notes:
Neu dargestellt wurden die Oxide RbLiZnO2 (A) und RbLiZn2O3 (B) in Form farbloser Einkristalle durch Tempern entsprechender Gemenge der binären Oxide. Beide Zincate kristallisieren tetragonal, A: Raumgr. I4/mmm, Z = 2, a = 351,84(4), c = 1153,3(2) pm; B: Raumgr. P42/mnm, Z = 4, a = 1 033,8(1), c = 342,8(1) pm. Die Kristallstrukturen wurden aus Vierkreisdiffraktometerdaten (MoKα) bestimmt (A: 155 hkl, R = 7,9%, Rw = 7,6%; B: 384 hkl, R = 7,0%, Rw = 4,6%). RbLiZnO2 kristallisiert im BaZn2P2-Strukturtyp, RbLiZn2O3 zeigt eine neue Struktur mit charakteristischen Würfel-Doppelketten ∞1[O4/2RbO4/2RbO4/2]. Der Madelunganteil der Gitterenergie (MAPLE) sowie effektive Koordinationszahlen (ECoN) wurden jeweils berechnet.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19895680116
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