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Zeitschrift für Kristallographie - Crystalline Materials

Editor-in-Chief: Pöttgen, Rainer

Ed. by Antipov, Evgeny / Bismayer, Ulrich / Boldyreva, Elena V. / Huppertz, Hubert / Petrícek, Václav / Tiekink, E. R. T.

12 Issues per year


IMPACT FACTOR increased in 2015: 2.560
Rank 8 out of 26 in category Cristallography in the 2015 Thomson Reuters Journal Citation Report/Science Edition

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2196-7105
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A density-functional theory approach to the existence and stability of molybdenum and tungsten sesquioxide polymorphs

Nils Becker
  • Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
  • Jülich-Aachen Research Alliance (JARA-HPC), RWTH Aachen University, D-52074 Aachen, Germany
/ Christoph Reimann
  • Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, University of Bonn, Beringstraße 4, D-53115 Bonn, Germany
/ Dominik Weber
  • Technische Universität Berlin, Fakultät II, Institut für Chemie, Sekretariat C 2, Straße des 17. Juni 135, D-10623 Berlin, Germany
/ Tobias Lüdtke
  • Technische Universität Berlin, Fakultät II, Institut für Chemie, Sekretariat C 2, Straße des 17. Juni 135, D-10623 Berlin, Germany
/ Martin Lerch
  • Technische Universität Berlin, Fakultät II, Institut für Chemie, Sekretariat C 2, Straße des 17. Juni 135, D-10623 Berlin, Germany
/ Thomas Bredow
  • Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, University of Bonn, Beringstraße 4, D-53115 Bonn, Germany
/ Richard Dronskowski
  • Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
  • Jülich-Aachen Research Alliance (JARA-HPC), RWTH Aachen University, D-52074 Aachen, Germany
  • :
Published Online: 2016-08-26 | DOI: https://doi.org/10.1515/zkri-2016-1960

Abstract

The sesquioxides of molybdenum and tungsten have been reported as thin films or on surfaces as early as 1971, but the preparation of bulk materials and their crystal structures are still unknown up to the present day. We present a systematic ab initio approach to their possible syntheses and crystal structures applying complementary methods and basis-set types. For both compounds, the corundum structure is the most stable and does not display any imaginary frequencies. Calculations targeted at a high-pressure synthesis starting from the stable oxides and metals predict a reaction pressure of 15 GPa for Mo2O3 and over 60 GPa for W2O3.

This article offers supplementary material which is provided at the end of the article.

Keywords: DFT; high-pressure; molybdenum; sesquioxide; tungsten


Received: 2016-05-25

Accepted: 2016-08-04

Published Online: 2016-08-26

Published in Print: 2017-02-01


Citation Information: Zeitschrift für Kristallographie - Crystalline Materials. Volume 232, Issue 1-3, Pages 69–75, ISSN (Online) 2196-7105, ISSN (Print) 2194-4946, DOI: https://doi.org/10.1515/zkri-2016-1960, August 2016

Supplementary Article Materials

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