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Title: Carbon tetrachloride under extreme conditions

We report on three experiments on carbon tetrachloride subjected to extreme conditions. In the first experiment, Raman spectra of CCl 4 were acquired up to 28 GPa. Evidence was observed for at least two new phases of CCl 4 above 14 GPa (phase VI) and above 22 GPa (phase VII). Decompression of the sample showed no evidence of pressure-induced decomposition. In the second experiment, a synchrotron x-ray diffraction study was performed up to 30 GPa verifying phase V and potential phases above 14 (VI) and 22 GPa (VII), respectively. In the third study, we examined irradiated CCl 4 using synchrotron infrared spectroscopy to reduce fluorescent contamination. Some sort of carbon allotrope appears as a byproduct suggesting the following reaction with hard x-rays: CCl 4+ hν → C + 2Cl 2.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [2]
  1. Univ. of Nevada, Las Vegas, NV (United States)
  2. Univ. of Saskatchewan, Saskatoon, SK (Canada)
Publication Date:
Grant/Contract Number:
NA0000979
Type:
Accepted Manuscript
Journal Name:
Journal of Chemical Physics
Additional Journal Information:
Journal Volume: 140; Journal Issue: 19; Journal ID: ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)
Research Org:
Nuclear Science and Security Consortium, Berkeley, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1454613

Pravica, Michael, Sneed, Daniel, Wang, Yonggang, Smith, Quinlan, and Subrahmanyam, Garimella. Carbon tetrachloride under extreme conditions. United States: N. p., Web. doi:10.1063/1.4876220.
Pravica, Michael, Sneed, Daniel, Wang, Yonggang, Smith, Quinlan, & Subrahmanyam, Garimella. Carbon tetrachloride under extreme conditions. United States. doi:10.1063/1.4876220.
Pravica, Michael, Sneed, Daniel, Wang, Yonggang, Smith, Quinlan, and Subrahmanyam, Garimella. 2014. "Carbon tetrachloride under extreme conditions". United States. doi:10.1063/1.4876220. https://www.osti.gov/servlets/purl/1454613.
@article{osti_1454613,
title = {Carbon tetrachloride under extreme conditions},
author = {Pravica, Michael and Sneed, Daniel and Wang, Yonggang and Smith, Quinlan and Subrahmanyam, Garimella},
abstractNote = {We report on three experiments on carbon tetrachloride subjected to extreme conditions. In the first experiment, Raman spectra of CCl4 were acquired up to 28 GPa. Evidence was observed for at least two new phases of CCl4 above 14 GPa (phase VI) and above 22 GPa (phase VII). Decompression of the sample showed no evidence of pressure-induced decomposition. In the second experiment, a synchrotron x-ray diffraction study was performed up to 30 GPa verifying phase V and potential phases above 14 (VI) and 22 GPa (VII), respectively. In the third study, we examined irradiated CCl4 using synchrotron infrared spectroscopy to reduce fluorescent contamination. Some sort of carbon allotrope appears as a byproduct suggesting the following reaction with hard x-rays: CCl4+ hν → C + 2Cl2.},
doi = {10.1063/1.4876220},
journal = {Journal of Chemical Physics},
number = 19,
volume = 140,
place = {United States},
year = {2014},
month = {5}
}

Works referenced in this record:

High pressure X-ray photochemical studies of carbon tetrachloride: Cl2 production and segregation
journal, December 2013