Dry ice II, a new polymorph of CO2

Details Dry ice II, a new polymorph of CO2 Dry ice II, a new polymorph of CO2

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.303..508l&link_type=abstract

Nature (ISSN 0028-0836), vol. 303, June 9, 1983, p. 508, 509.

Computer Science

16

Carbon Dioxide, Crystal Structure, Ice, Planetary Composition, Polymorphism, Phase Diagrams, Phase Transformations, X Ray Diffraction

Scientific paper

In situ studies of high-pressure phase transformations of CO2 have been performed with both optical and X-ray observations in a standard gasketed diamond anvil pressure cell. A new polymorph of dry ice was observed in the pressure range between about 5 and 23 kbar at room temperature. No X-ray powder diffraction pattern for the solid phase crystallized from liquid CO2 was obtained because of the strong tendency to form large single crystals, except when a 'metastable' liquid CO2 suddenly transformed to the new solid phase accompanied by an explosion. The quality of the powder diffraction data thus produced is too poor to deduce a possible structural type for the new phase. On the basis of optical observations, dry ice II might have a refractive index and/or density very similar to ordinary dry ice (type I) in the vicinity of 23 kbar at room temperature.

Affiliated with

Also associated with

No associations

Rating

Dry ice II, a new polymorph of CO2 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dry ice II, a new polymorph of CO2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dry ice II, a new polymorph of CO2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1508643