Journal of Low Temperature Physics

, Volume 111, Issue 3, pp 247–256

Carbon Monoxide: Spectroscopic Characterization of the High–Pressure Polymerized Phase

  • M. Lipp
  • W. J. Evans
  • V. Garcia-Baonza
  • H. E. Lorenzana
Article

DOI: 10.1023/A:1022267115640

Cite this article as:
Lipp, M., Evans, W.J., Garcia-Baonza, V. et al. Journal of Low Temperature Physics (1998) 111: 247. doi:10.1023/A:1022267115640

Abstract

Solid carbon monoxide transforms to the δ–phase at about 48 kbar at room temperature. In this pressure regime (50 kbar and greater), carbon monoxide undergoes a transformation at room temperature to a light–pink solid, which has not been studied in detail and may be different from the δ–phase. Exposure to moderate light intensities at these P–T conditions converts the system to a dark red material. We report visible and infrared absorption as well as Raman investigations of this dark red substance, which likely contains a polymeric product of the photochemical reaction. This material is stable upon pressure release down to ambient conditions. Previous studies speculated that the dark red product was a mixture of poly–carbonsuboxide (C3O2) and oxalic anhydride (C2O3). In contrast, we present evidence that this material is composed of graphitic–like carbon, carbon dioxide, and possibly a polymerized network containing\(- \left( {{\text{C = O}}} \right) - {\text{O}} - \left( {{\text{C}} - } \right) = {\text{C}} < \)as a repeating unit.

Copyright information

© Plenum Publishing Corporation 1998

Authors and Affiliations

  • M. Lipp
    • 1
  • W. J. Evans
    • 1
  • V. Garcia-Baonza
    • 1
  • H. E. Lorenzana
    • 1
  1. 1.Physics and Space Technology DirectorateLawrence Livermore National LaboratoryLivermoreUSA