Conformation Equilibrium of 1,2-Dichloroethane as a Probe for Solvent Properties of Liquid and Supercritical CO_2

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Abstract

Gibbs-energy difference between the gauche and trans isomers of 1,2-dichloroethane (DCE) in liquid and supercritical (SC) CO<SUB>2</SUB> was investigated using Raman spectroscopy. The gauche isomer was relatively stabilized in these solvents compared with in non-polar organic solvents. This was attributed to the interaction of the dipolar gauche isomer with the quadrupole moment of the CO<SUB>2</SUB> molecule, as well as the local density enhancement in SC CO<SUB>2</SUB>. Conformation equilibrium of DCE was suggested to be useful as a probe for studying solvent properties of SC fluids.

Journal

  • Chemistry Letters

    Chemistry Letters 36(9), 1126-1127, 2007-09-05

    The Chemical Society of Japan

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Codes

  • NII Article ID (NAID)
    10019845693
  • NII NACSIS-CAT ID (NCID)
    AA00603318
  • Text Lang
    ENG
  • Article Type
    SHO
  • ISSN
    03667022
  • Data Source
    CJP  J-STAGE 
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