Eu4OCl6 and Eu4OBr6: Crystal growth and structure
- 9 November 1987
- journal article
- research article
- Published by Wiley in Zeitschrift für anorganische und allgemeine Chemie
- Vol. 554 (11) , 118-122
- https://doi.org/10.1002/zaac.19875541115
Abstract
Faint yellow transparent single crystals of Eu4OCl6 (1) and Eu4OBr6 (2) grow from fluxes that emerge from reaction mixtures containing EuX3 (X Cl, br), Eu2O3 and lithium metal in 6:1:8 molar ratios at elevated temperatures in tantalum ampoules. Both crystallize with the Ba4OCl6 type structure (hexagonal, P63mc, Z = 2, 1: a = 944.07(4), c = 715.60(4) pm and 2: a = 982.04(4), c = 749.69(5) pm) with „isolated”︁ O2− centered Eu4 tetrahedra.Keywords
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