ErNi2.23Al2.77 and YbNi2.31Al2.69 – i3 superstructures of the CaCu5 type
Author:
Zaremba Nazar12, Muts Ihor23, Pavlyuk Volodymyr24, Hlukhyy Viktor1, Pöttgen Rainer3, Zaremba Vasyl2
Affiliation:
1. Department of Chemistry , Technische Universität München , Lichtenbergstrasse 4 , D-85747 Garching , Germany 2. Department of Inorganic Chemistry , Ivan Franko National University of Lviv , Kyryla and Mefodiya Street 6 , 79005 Lviv , Ukraine 3. Institut für Anorganische und Analytische Chemie, Universität Münster , Corrensstrasse 30 , 48149 Münster , Germany 4. Institute of Chemistry, Jan Długosz University in Częstochowa , al. Armii Krajowej 13/15 , 42200 , Częstochowa , Poland
Abstract
Abstract
The title compounds have been synthesized by reaction of the elements in sealed tantalum crucibles in a muffle furnace using special annealing sequences. The crystal structures of YbNi2.31Al2.69 (R1 = 0.0100 for 212 F
2 values and 18 variables) and for ErNi2.23Al2.77 (R1 = 0.0154 for 255 F
2 values and 18 variables) were refined from single crystal X-ray data. They belong to the YNi2Al3 type (i3 superstructure of CaCu5) with the following crystallographic parameters: space group
P
6
/
m
m
m
$P6/mmm$
, Pearson symbol hP18, Z = 3, a = 8.2723(12), c = 4.0672(8) Å, V = 241.03(8) Å3 for YbNi2.31Al2.69 and a = 8.9109(13), c = 4.0669(8) Å, V = 279.66(8) Å3 for ErNi2.23Al2.77. The crystal chemical discussion is supported by electronic structure calculations.
Publisher
Walter de Gruyter GmbH
Subject
Inorganic Chemistry,Condensed Matter Physics,General Materials Science
Reference29 articles.
1. Rykhal, R. M., Zarechnyuk, O. S. Dopov. Akad. Nauk Ukr. RSR, Ser. A 1977, 39, 375–377. 2. Zarechnyuk, O. S., Yanson, T. I., Rykhal, R. M. Akad. Nauk SSSR, Met. 1983, 4, 192–193. 3. Rykhal, R. M., Zarechnyuk, O. S., Kuten, J. I. Dopov. Akad. Nauk Ukr. RSR, Ser. A 1978, 40, 1136–1138. 4. Rykhal, R. M., Zarechnyuk, O. S., Yanson, T. I. Dopov. Akad. Nauk Ukr. RSR, Ser. A 1979, 41, 1057–1059. 5. Delsante, S., Raggio, R., Borzone, G. Intermetallics 2008, 16, 1250–1257; https://doi.org/10.1016/j.intermet.2008.07.010.
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