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Synthesis of FeN₄ at 180GPa and its crystal structure from a submicron-sized grain

Title data

Bykov, Maxim ; Khandarkhaeva, Saiana ; Fedotenko, Timofey ; Sedmak, Pavel ; Dubrovinskaia, Natalia ; Dubrovinsky, Leonid:
Synthesis of FeN₄ at 180GPa and its crystal structure from a submicron-sized grain.
In: Acta Crystallographica Section E. Vol. 74 (2018) Issue 10 . - pp. 1392-1395.
ISSN 1600-5368
DOI: https://doi.org/10.1107/S2056989018012161

Abstract in another language

Iron tetra­nitride, FeN4, was synthesized from the elements in a laser-heated diamond anvil cell at 180 (5) GPa and 2700 (200) K. Its crystal structure was determined based on single-crystal X-ray diffraction data collected from a submicron-sized grain at the synchrotron beamline ID11 of ESRF. The compound crystallizes in the triclinic space group P\overline{1}. In the asymmetric unit, the Fe atom occupies an inversion centre (Wyckoff position 1d), while two N atoms occupy general positions (2i). The structure is made up from edge-sharing [FeN6] octa­hedra forming chains along [100] and being inter­connected through N—N bridges. N atoms form catena-poly[tetraz-1-ene-1,4-di­yl] anions [–N=N—N—N–]∞2− running along [001]. In comparison with the previously reported structure of FeN4 at 135 GPa [Bykov et al. (2018). Nat. Commun. 9, 2756], the crystal structure of FeN4 at 180 GPa is similar but the structural model is significantly improved in terms of the precision of the bond lengths and angles.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: polynitrides; iron tetranitride; high-pressure single-crystal X-ray diffraction; crystal structure
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
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 11 Jul 2019 08:42
Last Modified: 11 Jul 2019 08:42
URI: https://eref.uni-bayreuth.de/id/eprint/49904