Transition metal centered trigonal prisms as building units in various rare earth-transition metal-indides

Vasyl I. Zaremba, Ute Ch Rodewald, Mar'Yana Lukachuk, Vitaliy P. Dubenskiy, Birgit Heying, Kenichi Katoh, Yuzuru Niide, Akira Ochiai, Rainer Pöttgen

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The rare earth-transition metal-indides GdPdIn, ErPdIn, YbPdIn, YPtIn, TmPtIn, Dy4Pd10In21, PrPt2In 2, and Tb2Pt7In16 were prepared by arc-melting of the elements or by induction melting of the elements in sealed tantalum tubes in a water-cooled sample chamber of a high-frequency furnace. Single crystals of Dy4Pd10In21 and Tb 2Pt7In16 were grown through special annealing procedures. The indides were investigated via X-ray powder diffraction and all structures were refined from X-ray single crystal diffractometer data: ZrNiAl type, $P \bar {6}2m$ , a = 767.8(3), c = 390.7(2) pm, wR2 = 0.0722, 356 F 2 values for GdPdIn; a = 766.7(3), c = 376.7(1) pm, wR2 = 0.0433, 348 F 2 values for ErPdIn; a = 757.2(2), c = 393.59(8) pm, wR2 = 0.0388, 434 F 2 values for YbPdIn; a = 758.2(2), c = 384.95(8) pm, wR2 = 0.0643, 353 F 2 values for YPtIn; and a = 753.4(1), c = 376.71(4) pm, wR2 = 0.0844, 310 F 2 values for TmPtIn, with 14 variable parameters per refinement. Dy4Pd10In21 crystallizes with the monoclinic Ho4Ni10Ga21 structure: C2/m, a = 2284.5(8), b = 441.0(2), c = 1931.4(7) pm, β = 132.74(2)°, wR2 = 0.0419, 1690 F 2 values, 112 variable parameters. PrPt2In2 adopts the CePt2In 2 type: P21/m, a = 1013.2(3), b = 447.2(3), c = 1019.5(3) pm, β = 116.69(2)°, wR2 = 0.0607, 1259 F 2 values, 63 variable parameters. Tb2Pt7In16 is the second representative of the orthorhombic Dy2Pt7In16 type: Cmmm, a = 1211.6(2), b = 1997.1(4), c = 440.52(9) pm, wR2 = 0.0787, 1341 F 2 values, 45 variable parameters. The common structural motif of the four different structure types are transition metal centered trigonal prisms formed by the rare earth metal and indium atoms. These prisms are condensed via common corners or via In-In bonds. The crystal chemistry of the four different structure types is discussed.

Original languageEnglish
Pages (from-to)249-261
Number of pages13
JournalMonatshefte fur Chemie
Volume137
Issue number3
DOIs
Publication statusPublished - 2006 Mar 1

Keywords

  • Crystal chemistry
  • Indides
  • Rare earth compounds

ASJC Scopus subject areas

  • Chemistry(all)

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