Journal of Chemical Physics, volume 120, issue 22, pages 10618-10623
Polymerization of nitrogen in sodium azide.
Publication type: Journal Article
Publication date: 2004-05-18
Journal:
Journal of Chemical Physics
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 4.4
ISSN: 00219606, 10897690
Physical and Theoretical Chemistry
General Physics and Astronomy
Abstract
The high-pressure behavior of nitrogen in NaN3 was studied to 160 GPa at 120–3300 K using Raman spectroscopy, electrical conductivity, laser heating, and shear deformation methods. Nitrogen in sodium azide is in a molecularlike form; azide ions N3− are straight chains of three atoms linked with covalent bonds and weakly interact with each other. By application of high pressures we strongly increased interaction between ions. We found that at pressures above 19 GPa a new phase appeared, indicating a strong coupling between the azide ions. Another transformation occurs at about 50 GPa, accompanied by the appearance of new Raman peaks and a darkening of the sample. With increasing pressure, the sample becomes completely opaque above 120 GPa, and the azide molecular vibron disappears, evidencing completion of the transformation to a nonmolecular nitrogen state with amorphouslike structure which crystallizes after laser heating up to 3300 K. Laser heating and the application of shear stress accelerates the transformation and causes the transformations to occur at lower pressures. These changes can be interpreted in terms of a transformation of the azide ions to larger nitrogen clusters and then polymeric nitrogen net. The polymeric forms can be preserved on decompression in the diamond anvil cell but transform back to the starting azide and other new phases under ambient conditions.
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Citations by publishers
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38 publications, 25.33%
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1 publication, 0.67%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 0.67%
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Eremets M. I. et al. Polymerization of nitrogen in sodium azide. // Journal of Chemical Physics. 2004. Vol. 120. No. 22. pp. 10618-10623.
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Eremets M. I., Popov M. Y., Trojan I., Denisov V., Boehler R., Hemley R. J. Polymerization of nitrogen in sodium azide. // Journal of Chemical Physics. 2004. Vol. 120. No. 22. pp. 10618-10623.
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TY - JOUR
DO - 10.1063/1.1718250
UR - https://doi.org/10.1063/1.1718250
TI - Polymerization of nitrogen in sodium azide.
T2 - Journal of Chemical Physics
AU - Eremets, M. I.
AU - Popov, M. Yu.
AU - Trojan, I.A
AU - Denisov, V.N.
AU - Boehler, R.
AU - Hemley, R. J.
PY - 2004
DA - 2004/05/18 00:00:00
PB - American Institute of Physics (AIP)
SP - 10618-10623
IS - 22
VL - 120
SN - 0021-9606
SN - 1089-7690
ER -
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@article{2004_Eremets,
author = {M. I. Eremets and M. Yu. Popov and I.A Trojan and V.N. Denisov and R. Boehler and R. J. Hemley},
title = {Polymerization of nitrogen in sodium azide.},
journal = {Journal of Chemical Physics},
year = {2004},
volume = {120},
publisher = {American Institute of Physics (AIP)},
month = {may},
url = {https://doi.org/10.1063/1.1718250},
number = {22},
pages = {10618--10623},
doi = {10.1063/1.1718250}
}
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Eremets, M. I., et al. “Polymerization of nitrogen in sodium azide..” Journal of Chemical Physics, vol. 120, no. 22, May. 2004, pp. 10618-10623. https://doi.org/10.1063/1.1718250.