The scandium-rich indide Sc50Pt13.47In2.53

Nataliya L. Gulay; Jutta Kösters; Yaroslav M. Kalychak; Rainer Pöttgen

doi:10.1515/znb-2020-0048

Published by De Gruyter July 1, 2020

The scandium-rich indide Sc₅₀Pt_13.47In_2.53

Nataliya L. Gulay , Jutta Kösters , Yaroslav M. Kalychak and Rainer Pöttgen

From the journal Zeitschrift für Naturforschung B

https://doi.org/10.1515/znb-2020-0048

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Abstract

The scandium-rich indide Sc₅₀Pt_13.47In_2.53 was obtained by induction melting of the elements and subsequent annealing. The structure of Sc₅₀Pt_13.47In_2.53 has been refined from single-crystal X-ray diffractometer data: Fm3¯, a = 1774.61(3) pm, wR2 = 0.0443, 1047 F² values and 35 variables. Sc₅₀Pt_13.47In_2.53 is isopointal with the intermetallic phases Sc₅₀Co_12.5In_3.5, Sc₅₀Rh_13.3In_2.7, Sc₅₀Ir_13.6In_2.4, Ag_7+xMg_26−x and Ga_4.55Mg_21.85Pd_6.6 (Pearson code cF264 and Wyckoff sequence ih²fecba). Two of the eight crystallographic sites in the structure show mixed occupancies: M1 (≡Pt2_0.70In1_0.30) and M2 (≡Pt3_0.76In2_0.24). The structure contains four basic polyhedra: M2@Sc₈ cubes, Pt1@Sc₁₀ sphenocorona and slightly distorted M1@Sc₁₂ and In3@Sc₁₂ icosahedra. The polyhedra are condensed via common scandium corners and edges. The various Sc–Sc distances range from 302–334 pm and are indicative of substantial Sc–Sc bonding, stabilizing the Sc₅₀Pt_13.47In_2.53 structure.

Keywords: hierarchical structure; indium; intermetallics; metal-rich phase; platinum; scandium

Corresponding author: Rainer Pöttgen, Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, 48149 Münster, Germany, E-mail: pottgen@uni-muenster.de

Funding source: Deutscher Akademischer Austauschdienst

Acknowledgments

The research stay of NLG in Münster was supported by the Deutscher Akademischer Austauschdienst.

Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2020-04-15

Accepted: 2020-04-27

Published Online: 2020-07-01

Published in Print: 2020-08-27

The scandium-rich indide Sc₅₀Pt_13.47In_2.53

Abstract

Acknowledgments

References

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