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

Journal Article · · Nature Communications
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1];  [3];  [1]; ORCiD logo [1];  [4]; ORCiD logo [1]; ORCiD logo [5];  [6];  [3];  [7];  [8];  [9]; ORCiD logo [1]; ORCiD logo [1]
  1. Univ. of Bayreuth (Germany)
  2. Univ. of Bayreuth (Germany); Deutsches Elektronen-Synchrotron, Hamburg (Germany)
  3. Deutsches Elektronen-Synchrotron, Hamburg (Germany)
  4. University of Münster (Germany)
  5. European Synchrotron Radiation Facility, Grenoble Cedex (France)
  6. Univ. of Chicago, Argonne, IL (United States)
  7. Linköping University (Sweden); National University of Science and Technology ‘MISIS’, Moscow (Russia)
  8. National University of Science and Technology ‘MISIS’, Moscow (Russia)
  9. Linköping University (Sweden)

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.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-94ER14466; AC02-06CH11357
OSTI ID:
1460869
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 9; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
ENGLISH

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High‐Pressure Synthesis of Metal–Inorganic Frameworks Hf 4 N 20 ⋅N 2 , WN 8 ⋅N 2 , and Os 5 N 28 ⋅3 N 2 with Polymeric Nitrogen Linkers journal May 2020
High‐Pressure Synthesis of Metal–Inorganic Frameworks Hf 4 N 20 ⋅N 2 , WN 8 ⋅N 2 , and Os 5 N 28 ⋅3 N 2 with Polymeric Nitrogen Linkers journal May 2020
Electrochemical Synthesis of Highly Nitrogen Containing γ- FeN 0.13 and ε -Fe 3 N 1.51 in a Molten Salt System : Electrochemical Synthesis of Highly Nitrogen Containing journal January 2019
High-Pressure Synthesis and Phase Stability of Nickel Pernitride: High-Pressure Synthesis and Phase Stability of Nickel Pernitride journal August 2019
High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re2(N2)(N)2 stable at ambient conditions journal July 2019
Synthesis of magnesium-nitrogen salts of polynitrogen anions journal October 2019
A map of the inorganic ternary metal nitrides journal June 2019
Single-crystal diffractometer coupled with double-sided laser heating system at the Extreme Conditions Beamline P02.2 at PETRAIII journal July 2019
Pressure effect on Kohn anomaly and electronic topological transition in single-crystal tantalum journal August 2019
Large spin gaps in the half-metals M N 4 ( M =Mn, Fe, Co) with N 2 dimers journal May 2019
Synthesis of FeN 4 at 180 GPa and its crystal structure from a submicron-sized grain journal September 2018
High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re2(N2)N2 stable at ambient conditions text January 2019
High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride $Re_{2}(N_{2})(N)_{2}$ stable at ambient conditions text January 2019
Single-crystal diffractometer coupled with double-sided laser heating system at the Extreme Conditions Beamline P02.2 at PETRAIII text January 2019
In-situ growth of iron mononitride thin films studied using x-ray absorption spectroscopy and nuclear resonant scattering text January 2019
High‐Pressure Synthesis of Metal–Inorganic Frameworks $Hf{4}N_{2}0 ⋅ N_{2}$ , $WN_{8} ⋅ N_{2}$ , and $Os_{5}N_{28}$ ⋅ 3 $N_{2}$ with Polymeric Nitrogen Linkers text January 2020
Synthesis of Manganese Mononitride with Tetragonal Structure under Pressure journal September 2019
A Map of the Inorganic Ternary Metal Nitrides text January 2018