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Resonance

, Volume 11, Issue 11, pp 88–93 | Cite as

Molecule matters

Carbon dioxide: Molecular states and beyond
  • T. P. Radhakrishnan
Feature Article

Abstract

Carbon dioxide is a fascinating molecule; its gaseous, liquid, solid and even supercritical fluid states have unique properties and applications. The linear triatomic structure of carbon dioxide molecule with two carbon-oxygen double bonds is all too familiar. However a whole new world has been opened up by high pressure-high temperature experiments that effected the polymerization of this small molecule into a covalent network structure with carbon-oxygen single bonds. The crystalline and amorphous forms of carbonia are built up of linked tetrahedral CO4 units.

Keywords

Carbon dioxide phase diagram supercritical fluid polymeric CO2 

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Suggested Reading

  1. [1]
    See: http://202.41.85.161/ ~ch521/x-ray.ppt for a brief introduction to basics of symmetry and x-ray diffraction.Google Scholar
  2. [2]
    C S Yoo, H Cynn, F Gygi, G Galli, V Iota, M Nicol, S. Carlson, D. Häusermann, C Mailhiot, Crystal Structure of Carbon Dioxide at High Pressure: ‘Superhard’ Polymeric Carbon Dioxide,Physical Review Letters, Vol. 83, No. 26, pp. 5527–5530, 1999.CrossRefGoogle Scholar
  3. [3]
    See images at http://www. chem.leeds.ac.uk/People/ CMR/criticalpics. htmlGoogle Scholar
  4. [4]
    http://en.wikipedia.org/wiki/ Image:Carbon_dioxide_density pressur_phase_diagram.jpgGoogle Scholar
  5. [5]
    M Santoro, F A Gorelli, R Bini, G Ruocco, S Scandolo, W A Crichton, Amorphous Silica-like Carbon Dioxide,Nature, Vol. 441, pp. 857–860, 2006.CrossRefGoogle Scholar
  6. [6]
    M Santoro, F A Gorelli, High Pressure Solid State Chemistry of Carbon Dioxide,Chem. Soc. Rev., Vol. 35, pp. 918–931, 2006.CrossRefGoogle Scholar
  7. [7]
    V Iota, C S Yoo, H Cynn, Quartzlike Carbon Dioxide: An Optically Nonlinear Extended Solid at High Pressures and Temperatures,Science, Vol. 283, pp. 1510–1513, 1999.CrossRefGoogle Scholar
  8. [8]
    T P Radhakrishnan, Molecules to Materials: Part 4. Molecular Nonlinear Optical Materials,Resonance, Vol. 3, No. 8, pp. 14–24, 1998.Google Scholar
  9. [9]
    P F McMillan, A Glass of Carbon Dioxide,Nanture,Vol. 441, p. 823, 2006.CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 2006

Authors and Affiliations

  1. 1.Shcool of ChemistryUniversity of HyderabadHyderabadIndia

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