High-pressure structural studies of energetic compounds

Iain D. H. Oswald, David I. A. Millar, Alistair J. Davidson, Duncan J. Francis, William G. Marshall, Colin R. Pulham, Adam Cumming, Alistair R. Lennie, John E. Warren

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16 Citations (Scopus)

Abstract

The phase diagram of the energetic material hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) has been explored using X-ray and neutron diffraction from ambient pressure to 8GPa. Two phases of RDX have been structurally characterized. The high-pressure -polymorph exists above 4GPa while the metastable -polymorph has been isolated from the high boiling point solvent nitrobenzene. Interestingly, neutron diffraction measurements at high pressures and high temperatures show that the -polymorph isolated under ambient conditions is not the same polymorph as can be accessed at high pressures and temperatures.

Original languageEnglish
Pages (from-to)280-291
Number of pages12
JournalHigh Pressure Research
Volume30
Issue number2
DOIs
Publication statusPublished - 2010

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Keywords

  • phase diagram
  • phase transition
  • energetic material
  • X-ray
  • neutron
  • diamond anvil cell
  • crystal structure
  • gamma-RDX
  • polymorphs
  • phase
  • Hexahydro-1,3,5-Trinitro-S-Triazine
  • spectroscopy
  • temperature

Cite this

Oswald, I. D. H., Millar, D. I. A., Davidson, A. J., Francis, D. J., Marshall, W. G., Pulham, C. R., ... Warren, J. E. (2010). High-pressure structural studies of energetic compounds. High Pressure Research, 30(2), 280-291. https://doi.org/10.1080/08957951003757903