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2005
Structure
D 2000
27- 005
Solid Solutions Eu1-xPt 2Inx, Gd1-xPt2Inx, and Tm1-xNi2Inx. — The title solid solutions
are synthesized from the elements by arc-melting on water-cooled copper chills or by
induction melting in sealed Ta tubes and subsequent annealing. As revealed by powder
and single crystal XRD, Eu0.94Pt 2In0.06, Eu0.85Pt 2In0.15, and Gd0794Pt2In0.21 crystallize in
the space group Fd3m (MgCu2-type structure) with Z = 8, and TmNi4In crystallizes in
the space group F43m (MgCu 4Sn-type structure) with Z = 4. The Pt and Ni atoms build
up three-dimensional networks of corner-sharing Pt4/2 and Ni4/2 tetrahedra. These networks leave large voids of coordination number 16 that are filled with the rare earth
and the In atoms. — (LUKACHUK, M.; KALYCHAK, Y. M.; NILGES, T.;
POETTGEN*, R.; Z. Naturforsch., B: Chem. Sci. 60 (2005) 4, 393-397; Inst. Anorg.
Anal. Chem., Westfael. Wilhelms-Univ., D-48149 Muenster, Germany; Eng.) —
W. Pewestorf
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