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High-pressure synthesis of a pentazolate salt [High-pressure synthesis of condensed-phase pentazolate]

Journal Article · · Chemistry of Materials
 [1];  [2];  [2];  [2];  [3];  [1]
  1. Univ. of South Florida, Tampa, FL (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Univ. of Chicago, Chicago, IL (United States)
The pentazolates, the last all-nitrogen members of the azole series, have been notoriously elusive for the last hundred years despite enormous efforts to make these compounds in either gas or condensed phases. Here, we report a successful synthesis of a solid state compound consisting of isolated pentazolate anions N5, which is achieved by compressing and laser heating cesium azide (CsN3) mixed with N2 cryogenic liquid in a diamond anvil cell. The experiment was guided by theory, which predicted the transformation of the mixture at high pressures to a new compound, cesium pentazolate salt (CsN5). Electron transfer from Cs atoms to N5 rings enables both aromaticity in the pentazolates as well as ionic bonding in the CsN5 crystal. As a result, this work provides critical insight into the role of extreme conditions in exploring unusual bonding routes that ultimately lead to the formation of novel high nitrogen content species.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1343821
Alternate ID(s):
OSTI ID: 1342252
Report Number(s):
LLNL-JRNL--689491
Journal Information:
Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 2 Vol. 29; ISSN 0897-4756
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (30)

Fe-N system at high pressure reveals a compound featuring polymeric nitrogen chains journal July 2018
Synthesis of magnesium-nitrogen salts of polynitrogen anions journal October 2019
Theoretical Insights on the High Pressure Behavior of Pentazolate Anion Complex [Co(H2O)4(N5)2]·4H2O journal October 2019
Stabilization of the Pentazolate Anion in a Zeolitic Architecture with Na 20 N 60 and Na 24 N 60 Nanocages journal February 2018
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
Stabilization of the Pentazolate Anion in a Zeolitic Architecture with Na 20 N 60 and Na 24 N 60 Nanocages journal February 2018
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
Stabilization of the Pentazolate Anion in Three Anhydrous and Metal-Free Energetic Salts journal March 2018
Syntheses, Crystal Structures and Properties of a Series of 3D Metal–Inorganic Frameworks Containing Pentazolate Anion journal May 2018
Amorphous polymerization of nitrogen in compressed cupric azide journal January 2020
Confinement of the Pentanitrogen Cation Inside Carbon Nanotubes book January 2018
Pentazole anion cyclo-N5−: a rising star in nitrogen chemistry and energetic materials journal August 2018
Self-assembled energetic coordination polymers based on multidentate pentazole cyclo-N5− journal April 2018
A series of energetic metal pentazolate hydrates journal August 2017
Self-assembled energetic 3D metal–organic framework [Na 8 (N 5 ) 8 (H 2 O) 3 ] n based on cyclo -N 5 journal January 2018
Computational evaluation of metal pentazolate frameworks: inorganic analogues of azolate metal–organic frameworks journal January 2018
Benzene-like N 6 rings in a Be 2 N 6 monolayer: a stable 2D semiconductor with high carrier mobility journal January 2017
Recent advances in the syntheses and properties of polynitrogen pentazolate anion cyclo -N 5 and its derivatives journal January 2018
Metallic and anti-metallic properties of strongly covalently bonded energetic AlN 5 nitrides journal January 2019
A promising hydrogen peroxide adduct of ammonium cyclopentazolate as a green propellant component journal January 2020
Novel phases and superconductivity of tin sulfide compounds journal May 2018
Transformation of hydrazinium azide to molecular N 8 at 40 GPa journal April 2018
Single-crystal diffractometer coupled with double-sided laser heating system at the Extreme Conditions Beamline P02.2 at PETRAIII journal July 2019
Nanosecond-pulsed discharge in liquid nitrogen: optical characterization and production of an energetic non-molecular form of nitrogen-rich material journal July 2019
Roads to pentazolate anion: a theoretical insight journal May 2018
Structural evolution of amorphous polymeric nitrogen from ab initio molecular dynamics simulations and evolutionary search journal October 2018
Synthesis of FeN 4 at 180 GPa and its crystal structure from a submicron-sized grain journal September 2018
Fe-N system at high pressure reveals a compound featuring polymeric nitrogen chains text January 2018
Single-crystal diffractometer coupled with double-sided laser heating system at the Extreme Conditions Beamline P02.2 at PETRAIII 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

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