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  Na9Bi5Os3O24: A Diamagnetic Oxide Featuring a Pronouncedly Jahn-Teller-Compressed Octahedral Coordination of Osmium(VI)

Thakur, G. S., Reuter, H., Ushakov, A. V., Gallo, G., Nuss, J., Dinnebier, R. E., et al. (2021). Na9Bi5Os3O24: A Diamagnetic Oxide Featuring a Pronouncedly Jahn-Teller-Compressed Octahedral Coordination of Osmium(VI). Angewandte Chemie, International Edition in English, 60(30), 16500-16505. doi:10.1002/anie.202103295.

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 Creators:
Thakur, Gohil S.1, Author           
Reuter, Hans2, Author
Ushakov, Alexey V.2, Author
Gallo, Gianpiero2, Author
Nuss, Jürgen2, Author
Dinnebier, Robert E.2, Author
Streltsov, Sergey V.2, Author
Khomskii, Daniel I.2, Author
Jansen, Martin2, Author
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              

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 Abstract: The Jahn-Teller (JT) theorem constitutes one of the most fundamental concepts in chemistry. In transition-element chemistry, the 3d(4) and 3d(9) configurations in octahedral complexes are particularly illustrative, where a distortion in local geometry is associated with a reduction of the electronic energy. However, there has been a lasting debate about the fact that the octahedra are found to exclusively elongate. In contrast, for Na9Bi5Os3O24, the octahedron around Os6+(5d(2)) is heavily compressed, lifting the degeneracy of the t(2g) set of 5d orbitals such that in the sense of a JT compression a diamagnetic ground state results. This effect is not forced by structural constraints, the structure offers sufficient space for osmium to shift the apical oxygen atoms to a standard distance. The relevance of these findings is far reaching, since they provide new insights in the hierarchy of perturbations defining ground states of open shell electronic systems.
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Language(s): eng - English
 Dates: 2021-05-032021-05-03
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000662131500001
DOI: 10.1002/anie.202103295
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Title: Angewandte Chemie, International Edition in English
  Abbreviation : Angew. Chem., Int. Ed. Engl.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 60 (30) Sequence Number: - Start / End Page: 16500 - 16505 Identifier: ISSN: 0570-0833
CoNE: https://pure.mpg.de/cone/journals/resource/0570-0833