Home Physical Sciences ErNi2.23Al2.77 and YbNi2.31Al2.69 – i3 superstructures of the CaCu5 type
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ErNi2.23Al2.77 and YbNi2.31Al2.69 – i3 superstructures of the CaCu5 type

  • Nazar Zaremba , Ihor Muts , Volodymyr Pavlyuk , Viktor Hlukhyy , Rainer Pöttgen and Vasyl Zaremba
Published/Copyright: April 12, 2021
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Zeitschrift für Kristallographie - Crystalline Materials
From the journal Zeitschrift für Kristallographie - Crystalline Materials Volume 236 Issue 5-7

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 F2 values and 18 variables) and for ErNi2.23Al2.77 (R1 = 0.0154 for 255 F2 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 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.

Keywords: aluminum; crystal structure; intermetallics; rare earth; superstructure
Corresponding author: Nazar Zaremba, Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla and Mefodiya Street 6, 79005Lviv, Ukraine; and Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, D-85747Garching, Germany, E-mail:

Funding source: Deutscher Akademischer Austauschdienst

Award Identifier / Grant number: 91619802

Award Identifier / Grant number: 91573440

Funding source: National Science Centre, Poland

Award Identifier / Grant number: 2014/15/B/ST8/00101

Acknowledgments

We thank Dipl.-Ing. J. Kösters for the intensity data collection of ErNi2.23Al2.77.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This work was supported by the Deutscher Akademischer Austauschdienst and partially (Nr 91619802 and 91573440) by the National Science Centre, Poland (Nr 2014/15/B/ST8/00101).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-02-02
Accepted: 2021-03-22
Published Online: 2021-04-12
Published in Print: 2021-06-25

© 2021 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Inorganic Crystal Structures (Original Papers)
  4. ErNi2.23Al2.77 and YbNi2.31Al2.69 – i3 superstructures of the CaCu5 type
  5. New compound Sm2Ru3Sn5 with a structure derived from Ru3Sn7
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  9. KCu(SeO4)Cl(H2O)2, a first copper chloride selenate
  10. The germanides APtGe2 (A = Ca, Sr, Eu)
  11. Organic and Metalorganic Crystal Structures (Original Paper)
  12. Crystal structure analysis and supramolecular association in ethyl N-[amino(iminio)methyl]carbamate dichloride hemi-hydrate
https://doi.org/10.1515/zkri-2021-2011
Keywords for this article
aluminum; crystal structure; intermetallics; rare earth; superstructure

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Inorganic Crystal Structures (Original Papers)
  4. ErNi2.23Al2.77 and YbNi2.31Al2.69 – i3 superstructures of the CaCu5 type
  5. New compound Sm2Ru3Sn5 with a structure derived from Ru3Sn7
  6. Site preference and atomic ordering in the ternary Rh5Ga2As: first-principles calculations
  7. SmPt2In2 – a new ternary indide with a Pt–In polyanionic framework
  8. The order/disorder phase transition of hypophosphorous acid H3PO2
  9. KCu(SeO4)Cl(H2O)2, a first copper chloride selenate
  10. The germanides APtGe2 (A = Ca, Sr, Eu)
  11. Organic and Metalorganic Crystal Structures (Original Paper)
  12. Crystal structure analysis and supramolecular association in ethyl N-[amino(iminio)methyl]carbamate dichloride hemi-hydrate
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