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Synthesis of magnesium-nitrogen salts of polynitrogen anions

Author

Listed:
  • Dominique Laniel

    (University of Bayreuth)

  • Bjoern Winkler

    (Johann Wolfgang Goethe-Universität Frankfurt)

  • Egor Koemets

    (University of Bayreuth)

  • Timofey Fedotenko

    (University of Bayreuth)

  • Maxim Bykov

    (University of Bayreuth)

  • Elena Bykova

    (Photon Science, Deutsches Elektronen-Synchrotron)

  • Leonid Dubrovinsky

    (University of Bayreuth)

  • Natalia Dubrovinskaia

    (University of Bayreuth)

Abstract

The synthesis of polynitrogen compounds is of fundamental importance due to their potential as environmentally-friendly high energy density materials. Attesting to the intrinsic difficulties related to their formation, only three polynitrogen ions, bulk stabilized as salts, are known. Here, magnesium and molecular nitrogen are compressed to about 50 GPa and laser-heated, producing two chemically simple salts of polynitrogen anions, MgN4 and Mg2N4. Single-crystal X-ray diffraction reveals infinite anionic polythiazyl-like 1D N-N chains in the crystal structure of MgN4 and cis-tetranitrogen N44− units in the two isosymmetric polymorphs of Mg2N4. The cis-tetranitrogen units are found to be recoverable at atmospheric pressure. Our results respond to the quest for polynitrogen entities stable at ambient conditions, reveal the potential of employing high pressures in their synthesis and enrich the nitrogen chemistry through the discovery of other nitrogen species, which provides further possibilities to design improved polynitrogen arrangements.

Suggested Citation

  • Dominique Laniel & Bjoern Winkler & Egor Koemets & Timofey Fedotenko & Maxim Bykov & Elena Bykova & Leonid Dubrovinsky & Natalia Dubrovinskaia, 2019. "Synthesis of magnesium-nitrogen salts of polynitrogen anions," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12530-w
    DOI: 10.1038/s41467-019-12530-w
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    Cited by:

    1. Andrey Aslandukov & Alena Aslandukova & Dominique Laniel & Saiana Khandarkhaeva & Yuqing Yin & Fariia I. Akbar & Stella Chariton & Vitali Prakapenka & Eleanor Lawrence Bright & Carlotta Giacobbe & Jon, 2024. "Stabilization of N6 and N8 anionic units and 2D polynitrogen layers in high-pressure scandium polynitrides," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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