R8-xRu3In7+x, R3Ru1-xIn3, R39Ru12-xIn35, and R16Ru5In14 (R=La-Nd, Sm, Gd-Er, Lu) - New ternary indides with 2D intergrowth of CsCl- and AlB2-related slabs

JOURNAL OF ALLOYS AND COMPOUNDS

卷:791

Article

Tursina, Anna¹  Chernyshev, Vladimir¹  Nesterenko, Sergey¹  Noel, Henri²  Pasturel, Mathieu² 

[1] Lomonosov Moscow State Univ, Dept Chem, Moscow 119991, Russia

[2] Univ Rennes, CNRS, Inst Sci Chim Rennes, UMR6226, F-35042 Rennes, France

关键词: Intermetallics;    Rare earth alloys and compounds;    Crystal structure;    X-ray diffraction;   

DOI  :  10.1016/j.jallcom.2019.03.224

来源: Elsevier

【 摘 要 】

Twelve rare-earth ruthenium indides were synthesized by a two-step reaction and their crystal structures were determined by single-crystal X-ray diffraction. R3Ru1-xIn3 (Pbam, oP28) and R16Ru5In14 (P2/m, mP35) crystallize with new structure types whereas R39Ru12-xIn35 (Pbam, oP172) and R8-xRu3In7+x (Pmma, oP36) present occupation variants of Nd39Ir10.98In36.02 and Y5Cu5Mg8 structures, respectively. The new indides are built of two different layers alternatively stacking along the shortest unit cell axis. The first layer is formed exclusively of rare-earth atoms while the second layer is built of ruthenium and indium thus displaying RIn and RRu fragments of CsCI type and Rln(2) and RRu2 fragments of AIB(2) type. (C) 2019 Elsevier B.V. All rights reserved.

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