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Licensed Unlicensed Requires Authentication Published by De Gruyter April 5, 2024

Cu2Mg5Sn5Se16 – the first selenospinel of the A2B5C5X16 type

  • Kevin D. Profita and Eva M. Heppke EMAIL logo

Abstract

A new member of the A2B5C5X16 family of compounds – the first one containing Se – has been synthesized. Following a one-step mechanochemical synthesis route, starting from the binary selenides and Mg metal, Cu2Mg5Sn5Se16 has been obtained. Structural evaluation was carried out using X-ray diffraction with subsequent Rietveld refinement. Cu2Mg5Sn5Se16 adopts the spinel type with space group Fd 3 m and exhibits a statistical distribution of Cu, Mg, and Sn on Wyckoff position 16d whereas Wyckoff position 8a is only occupied by Mg. Despite the fact that structures containing MgSe4 tetrahedra are rare in the literature, it appeared to be the most plausible way of distributing the cations in this compound.


Dedicated to Professor Thomas Bredow of the University of Bonn on the occasion of his 60th birthday.



Corresponding author: Eva Maria Heppke, Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany, E-mail:

Acknowledgments

Special thanks to the Zentrum für Elektronenmikroskopie (ZELMI) of the TU Berlin giving access to the EDX measurements. EDX measurements were carried out by Christoph Fahrenson.

  1. Research ethics: Not applicable.

  2. Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Competing interests: The authors state no conflict of interest.

  4. Research funding: None declared.

  5. Data availability: Not applicable.

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Received: 2023-11-06
Accepted: 2023-11-20
Published Online: 2024-04-05
Published in Print: 2024-04-25

© 2023 Walter de Gruyter GmbH, Berlin/Boston

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