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Chromatographia

, Volume 23, Issue 8, pp 590–594 | Cite as

Structure-retention correlations of hydrocarbons in gas-liquid and gas-solid chromatography. Cycloalkenes and cycloalkadienes

  • W. Engewald
  • U. Billing
  • T. Welsch
  • G. Haufe
Originals

Summary

The retention indices of cycloalkenes and cycloalkadienes with C6–C13 rings are determined by gas-liquid chromatography (GLC) on glass capillary columns coated with OV-1 and Ucon LB 550X and by gas-solid chromatography (GSC) on a microcolumn packed with uncoated graphitized thermal carbon black (GTCB). Structure — retention correlations are derived on using index differences such as HOV, HGTCB and ΔI values, considering the differences in the stereochemistry of these compounds. It is shown that the combined application of index increments obtained in GLC and GSC provides more detailed structure informations. The value of the retention index units agree with the most stable conformations of the alicyclic compounds.

The high value for the energy equivalent to an index unit (ΔGI.U.=4.18kJ/mol) confirmes that graphitized thermal carbon black causes much stronger dispersive interactions than any nonpolar liquid phase.

Key Words

Gas-liquid chromatography Gas-solid chromatography Retention index data Cycloalkanes Cycloalkenes Cycloalkadienes 

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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1987

Authors and Affiliations

  • W. Engewald
    • 1
  • U. Billing
    • 1
  • T. Welsch
    • 1
  • G. Haufe
    • 1
  1. 1.Sektion ChemeKarl-Marx-Universität LeipzigLeipzigGerman Democratic Republic

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