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Fe-N system at high pressure reveals a compound featuring polymeric nitrogen chains

Title data

Bykov, Maxim ; Bykova, Elena ; Aprilis, Georgios ; Glazyrin, Konstantin ; Koemets, Egor ; Chuvashova, Irina ; Kupenko, I. ; McCammon, Catherine ; Mezouar, Mohamed ; Prakapenka, Vitali B. ; Liermann, Hanns-Peter ; Tasnádi, Ferenc ; Ponomareva, Alena V. ; Abrikosov, I. A. ; Dubrovinskaia, Natalia ; Dubrovinsky, Leonid:
Fe-N system at high pressure reveals a compound featuring polymeric nitrogen chains.
In: Nature Communications. Vol. 9 (16 July 2018) Issue 1 . - No. 2756 (2018).
ISSN 2041-1723
DOI: https://doi.org/10.1038/s41467-018-05143-2

Abstract in another language

Poly-nitrogen compounds have been considered as potential high energy density materials for a long time due to the large number of energetic N–N or N=N bonds. In most cases high nitrogen content and stability at ambient conditions are mutually exclusive, thereby making the synthesis of such materials challenging. One way to stabilize such compounds is the application of high pressure. Here, through a direct reaction between Fe and N2 in a laser-heated diamond anvil cell, we synthesize three ironnitrogen compounds Fe3N2, FeN2 and FeN4. Their crystal structures are revealed by single-crystal synchrotron X-ray diffraction. Fe3N2, synthesized at 50 GPa, is isostructural to chromium carbide Cr3C2. FeN2 has a marcasite structure type and features covalently bonded dinitrogen units in its crystal structure. FeN4, synthesized at 106 GPa, features polymeric nitrogen chains of [N42−]n units. Based on results of structural studies and theoretical analysis, [N42−]n units in this compound reveal catena-poly[tetraz-1-ene-1,4-diyl] anions.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Professur Materialphysik und Technologie bei extremen Bedingungen
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Professur Materialphysik und Technologie bei extremen Bedingungen > Professur Materialphysik und Technologie bei extremen Bedingungen - Univ.-Prof. Dr. Natalia Doubrovinckaia
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bavarian Research Institute of Experimental Geochemistry and Geophysics - BGI
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 29 Aug 2018 07:12
Last Modified: 22 Oct 2019 12:48
URI: https://eref.uni-bayreuth.de/id/eprint/45612