Zeitschrift für Kristallographie 203, 142-143 © by R. Oldenbourg Verlag, München 1993 (1993) 0044-2968/93 $3.00 + 0.00 G. Cordier and R. Henseleit Eduard-Zintl-Institut der Technischen Hochschule, Hochschulstr. 10, W-6100 Darmstadt (Received January 31, 1991) OVb «Au O Al Source of material: The compound was prepared by melting the elements in stoichiometric amounts in corundum crucibles for 2 h at 1400 and cooling to room temperature at a ratio of 100 K/h. The title compound crystallizes in the NiSiTi (Co2Si) structure type. Au- and Alatoms form a framework of tetrahedra. The ytterbium atoms (CN 16) occupy voids of this Au/Al-framework. Interatomic distances are: d(Yb-Yb) 3.662(1)= = 3.735(1) A, d(Yb-Au) 3.022(2)-3.640(2) A, d(Yb-Al) 3.190(9)-3.3360(9) Â, d(Au-Al) 2.645(9)-2.713(9)A, d(Al-Al) 3.425(14) A. Orthorhombic, Pnma (no 62), 7.210(2), b 4.488(1), 250.2 A3, 4, Qm 10.52 g cm"3, R 0.053. 7.732(2) A, Ytterbium gold aluminium X-ray data collection Number of unique reflections: 407 Criterion for unob< 0 ( ) served reflections : Number of refined 10 parameters : Scan mode : 0/20-scan 993.15 cm" µ: Structure solution SHELX program used : Table 1. Parameters used for the Diffractometer type: Wave length : Crystal characteristics : Temperature of measurement : Philips PW1100 Mo ,, radiation
Zeitschrift für Kristallographie - Crystalline Materials – de Gruyter
Published: Jan 1, 1993
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