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2001
structure
structure (solids and liquids)
D 2000
New Indium-Rich Compounds EuRhIn2 and EuRh2 In8 . — EuRhIn2
16 - 003 (I) and EuRh2 In8 (II) are prepared by reaction of the elements in sealed Ta
tubes (800 mbar Ar, 1500 K, 1 min, annealing at 800 K for 2 h). As revealed
by single crystal and powder XRD, the compounds crystallize with Z = 4 in the
orthorhombic space groups Cmcm (I) and Pbam (II). (I) adopts the MgCuAl2
type structure and may be considered as a Rh-filled variant of the binary Zintl
phase EuIn2 . In (II) the Rh atoms have a trigonal prismatic In coordination
and the In atoms form distorted In-centered InIn8 cubes and InIn10 pentagonal
prisms. A brief discussion of the chemical bonding in the compounds is given.
— (POETTGEN, RAINER; KUSSMANN, DIRK; Z. Anorg. Allg. Chem.
627 (2001) 1, 55-60; Fachbereich Chem., Ludwig-Maximilians-Univ., D-81377
Muenchen, Germany; EN)
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