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Title: Transformation of hydrazinium azide to molecular N 8 at 40 GPa

Abstract

Hydrazinium azide (HA) has been investigated at high pressures to 68 GPa using confocal micro-Raman spectroscopy and synchrotron powder x-ray diffraction. The results show that HA undergoes structural phase transitions from solid HA-I to HA-II at 13 GPa, associated with the strengthening of hydrogen bonding, and then to N 8 at 40 GPa. The transformation of HA to recently predicted N 8 (N≡N +—N–—N=N—–N—+N≡N) is evident by the emergence of new peaks at 2384 cm –1, 1665 cm –1, and 1165 cm –1, arising from the terminal N≡N stretching, the central N=N stretching, and the N—N stretching, respectively. Furthermore, upon decompression, N 8 decomposes to ε-N 2 below 25 GPa, but the remnant can be seen as low as 3 GPa.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [1];  [1];  [3]; ORCiD logo [3];  [3]
  1. Washington State Univ., Pullman, WA (United States)
  2. Washington State Univ., Pullman, WA (United States); Univ. of Chicago, IL (United States)
  3. Sogang Univ., Seoul (South Korea)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
National Research Foundation; USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1432864
Grant/Contract Number:  
N00174-16-C-0038; 1701360; W911NF-17-1-0468; 2016K1A4A3914691; U14358RF; NA0001974
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Chemical Physics
Additional Journal Information:
Journal Volume: 148; Journal Issue: 13; Journal ID: ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
ENGLISH
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Synchrotrons; X-ray diffraction; Chemical elements; Chemical compounds; Organic compounds; Raman microspectroscopy; Raman spectroscopy; Chemical bonding; Polymers; Phase transitions

Citation Formats

Duwal, Sakun, Ryu, Young-Jay, Kim, Minseob, Yoo, Choong-Shik, Bang, Sora, Kim, Kyungtae, and Hur, Nam Hwi. Transformation of hydrazinium azide to molecular N8 at 40 GPa. United States: N. p., 2018. Web. doi:10.1063/1.5021976.
Duwal, Sakun, Ryu, Young-Jay, Kim, Minseob, Yoo, Choong-Shik, Bang, Sora, Kim, Kyungtae, & Hur, Nam Hwi. Transformation of hydrazinium azide to molecular N8 at 40 GPa. United States. doi:10.1063/1.5021976.
Duwal, Sakun, Ryu, Young-Jay, Kim, Minseob, Yoo, Choong-Shik, Bang, Sora, Kim, Kyungtae, and Hur, Nam Hwi. Fri . "Transformation of hydrazinium azide to molecular N8 at 40 GPa". United States. doi:10.1063/1.5021976. https://www.osti.gov/servlets/purl/1432864.
@article{osti_1432864,
title = {Transformation of hydrazinium azide to molecular N8 at 40 GPa},
author = {Duwal, Sakun and Ryu, Young-Jay and Kim, Minseob and Yoo, Choong-Shik and Bang, Sora and Kim, Kyungtae and Hur, Nam Hwi},
abstractNote = {Hydrazinium azide (HA) has been investigated at high pressures to 68 GPa using confocal micro-Raman spectroscopy and synchrotron powder x-ray diffraction. The results show that HA undergoes structural phase transitions from solid HA-I to HA-II at 13 GPa, associated with the strengthening of hydrogen bonding, and then to N8 at 40 GPa. The transformation of HA to recently predicted N8 (N≡N+—N–—N=N—–N—+N≡N) is evident by the emergence of new peaks at 2384 cm–1, 1665 cm–1, and 1165 cm–1, arising from the terminal N≡N stretching, the central N=N stretching, and the N—N stretching, respectively. Furthermore, upon decompression, N8 decomposes to ε-N2 below 25 GPa, but the remnant can be seen as low as 3 GPa.},
doi = {10.1063/1.5021976},
journal = {Journal of Chemical Physics},
issn = {0021-9606},
number = 13,
volume = 148,
place = {United States},
year = {2018},
month = {4}
}

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Cited by: 4 works
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