Copper-indium ordering in RECu{sub 6}In{sub 6} (RE=Y, Ce, Pr, Nd, Gd, Tb, Dy)

Journal Article · Sat Sep 15 00:00:00 EDT 2007 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2007.06.029· OSTI ID:21043838

Zaremba, Roman ^[1]; Muts, Ihor ^[1]; Hoffmann, Rolf-Dieter ^[1]; Zaremba, Vasyl' I ^[2]; Poettgen, Rainer ^[1]

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1. Institut fuer Anorganische und Analytische Chemie, Universitaet Muenster, Corrensstrasse 30, 48149 Muenster (Germany)
2. Inorganic Chemistry Department, Ivan Franko National University of Lviv, Kyryla and Mephodiya Street 6, 79005 Lviv (Ukraine)

The rare earth metal-copper-indides RECu{sub 6}In{sub 6} (RE=Y, Ce, Pr, Nd, Gd, Tb, Dy) were synthesized from the elements by arc-melting. Well-crystallized samples were obtained by slowly cooling the melted buttons from 1320 to 670 K in sealed silica tubes in a muffle furnace. They were investigated by X-ray diffraction on powders and single crystals: ThMn{sub 12} type, space group I4/mmm, Z=2, a=916.3(2), c=535.8(2) pm, wR{sub 2}=0.063, 216 F{sup 2} values, 15 variables for YCu{sub 6}In{sub 6}, a=926.5(4), c=543.5(3) pm, wR{sub 2}=0.064, 314 F{sup 2} values, 15 variables for CeCu{sub 6}In{sub 6}, a=925.7(4), c=540.1(3) pm, wR{sub 2}=0.075, 219 F{sup 2} values, 15 variables for PrCu{sub 6}In{sub 6}, a=923.1(4), c=540.3(3) pm, wR{sub 2}=0.071, 218 F{sup 2} values, 15 variables for NdCu{sub 6}In{sub 6}, a=917.7(4), c=540.2(3) pm, wR{sub 2}=0.076, 207 F{sup 2} values, 15 variables for GdCu{sub 6}In{sub 6}, a=917.0(5), c=540.5(4) pm, wR{sub 2}=0.062, 215 F{sup 2} values, 15 variables for TbCu{sub 6}In{sub 6}, a=915.2(8), c=540.7(7) pm, wR{sub 2}=0.108, 218 F{sup 2} values, 15 variables for DyCu{sub 6}In{sub 6}. The structures have been refined with a split position (50% Cu+50% In) for the 8j site. They can be explained by a tetragonal body-centered packing of CN 20 polyhedra (10Cu+10In) around the rare earth atoms. The ordering models of the copper and indium atoms and the limitations/resolution of X-ray diffraction for this topic are discussed. - Graphical abstract: The copper-indium network in CeCu{sub 6}In{sub 6}.

• OSTI ID: 21043838
• Journal Information: Journal of Solid State Chemistry, Vol. 180, Issue 9; Other Information: DOI: 10.1016/j.jssc.2007.06.029; PII: S0022-4596(07)00271-X; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CERIUM COMPOUNDS
COPPER COMPOUNDS
DYSPROSIUM COMPOUNDS
GADOLINIUM COMPOUNDS
INDIUM COMPOUNDS
INTERMETALLIC COMPOUNDS
MELTING
MONOCRYSTALS
NEODYMIUM COMPOUNDS
PRASEODYMIUM COMPOUNDS
SILICA
SPACE GROUPS
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
TERBIUM COMPOUNDS
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS