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Ba3Mg4Au4 – a ternary auride composed of BaAu2- and BaMg2Au-related slabs

  • Maximilian Kai Reimann , Jutta Kösters and Rainer Pöttgen EMAIL logo
Published/Copyright: April 5, 2024
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Zeitschrift für Naturforschung B
From the journal Zeitschrift für Naturforschung B Volume 79 Issue 4

Abstract

The ternary auride Ba3Mg4Au4 was synthesized from the elements in a sealed tantalum ampoule. The Ba3Mg4Au4 structure was refined from single-crystal X-ray diffractometer data: Gd3Cu4Ge4 type, space group Immm, a = 447.95(10), b = 843.07(18), c = 1564.2(5) pm, wR2 = 0.0935, 680 F2 values, 23 variables. Ba3Mg4Au4 is a 1:2 intergrowth structure of BaAu2-(AlB2 type) and BaMg2Au-(MgCuAl2 type) related slabs. The two crystallographically independent gold atoms both have tricapped trigonal prismatic coordination, i.e. Au1@Mg6Ba3 and Au2@Mg2Ba6Au. The Au–Mg (284–303 pm) and Ba–Au (331–349 pm) distances cover small ranges that are close to the sums of the covalent radii. The magnesium atoms in the MgCuAl2-related slab show Mg–Mg distances of 320–332 pm. The different coloring variants of the Gd3Cu4Ge4 type are briefly discussed.

Keywords: auride; crystal chemistry; intermetallics

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

Corresponding author: Rainer Pöttgen, Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, 48149 Münster, Germany, E-mail:

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

  2. Research funding: None declared.

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

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Received: 2023-05-05
Accepted: 2023-06-12
Published Online: 2024-04-05
Published in Print: 2024-04-25

© 2023 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Editorial
  4. Thomas Bredow zum 60. Geburtstag gewidmet
  5. Research Articles
  6. Ni2Mo3N: crystal structure, thermal properties, and catalytic activity for ammonia decomposition
  7. Ionic conductivity of nanocrystalline γ-AgI prepared by high-energy ball milling
  8. Ba3Mg4Au4 – a ternary auride composed of BaAu2- and BaMg2Au-related slabs
  9. Solvothermal synthesis and selected properties of {[Ni(dien)2]3[V6As8O26]}2+·2 Cl– featuring the small [V6IVAs8IIIO26]4– cluster anion
  10. Ab initio calculations of the chemisorption of atomic H and O on Pt and Ir metal and on bimetallic Pt x Ir y surfaces
  11. mcGFN-FF: an accurate force field for optimization and energetic screening of molecular crystals
  12. A molecular mechanics implementation of the cyclic cluster model
  13. A computational characterization of N-heterocyclic carbenes for catalytic and nonlinear optical applications
  14. Oxygen diffusion in β-Ga2O3 single crystals under different oxygen partial pressures at 1375 °C
  15. Origin of extended visible light absorption in nitrogen-doped CuTa2O6 perovskites: the role of copper defects
  16. High-temperature all-solid-state batteries with LiBH4 as electrolyte – a case study exploring the performance of TiO2 nanorods, Li4Ti5O12 and graphite as active materials
  17. Cu2Mg5Sn5Se16 – the first selenospinel of the A2B5C5X16 type
  18. Crystal structures and crystallographic classification of titanium silicophosphates – with a note on structure and composition of silicophosphates “M3P5SiO19”
  19. From Cs[C2N3] to Cs3[C6N9] – a thermal and structural investigation
  20. A Hybrid Monte Carlo study of argon solidification
https://doi.org/10.1515/znb-2023-0033
Keywords for this article
auride; crystal chemistry; intermetallics

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Editorial
  4. Thomas Bredow zum 60. Geburtstag gewidmet
  5. Research Articles
  6. Ni2Mo3N: crystal structure, thermal properties, and catalytic activity for ammonia decomposition
  7. Ionic conductivity of nanocrystalline γ-AgI prepared by high-energy ball milling
  8. Ba3Mg4Au4 – a ternary auride composed of BaAu2- and BaMg2Au-related slabs
  9. Solvothermal synthesis and selected properties of {[Ni(dien)2]3[V6As8O26]}2+·2 Cl– featuring the small [V6IVAs8IIIO26]4– cluster anion
  10. Ab initio calculations of the chemisorption of atomic H and O on Pt and Ir metal and on bimetallic Pt x Ir y surfaces
  11. mcGFN-FF: an accurate force field for optimization and energetic screening of molecular crystals
  12. A molecular mechanics implementation of the cyclic cluster model
  13. A computational characterization of N-heterocyclic carbenes for catalytic and nonlinear optical applications
  14. Oxygen diffusion in β-Ga2O3 single crystals under different oxygen partial pressures at 1375 °C
  15. Origin of extended visible light absorption in nitrogen-doped CuTa2O6 perovskites: the role of copper defects
  16. High-temperature all-solid-state batteries with LiBH4 as electrolyte – a case study exploring the performance of TiO2 nanorods, Li4Ti5O12 and graphite as active materials
  17. Cu2Mg5Sn5Se16 – the first selenospinel of the A2B5C5X16 type
  18. Crystal structures and crystallographic classification of titanium silicophosphates – with a note on structure and composition of silicophosphates “M3P5SiO19”
  19. From Cs[C2N3] to Cs3[C6N9] – a thermal and structural investigation
  20. A Hybrid Monte Carlo study of argon solidification
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