Spectroscopic study of rotation-crystalline modifications of mixtures of n-paraffins C22-C24

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Abstract

The binary solid mixtures of n-paraffins, C22-C24, with different molar ratios of 96:4, 3:1, 2:1, 1:4, 1:5, and 1:10 have been studied by FTIR spectroscopy, X-ray diffraction and differential scanning calorimetry (DSC). Temperature-dependent studies of Davydov splitting value, Δν1,2, of in-phase CH2 rocking vibrations have been shown to allow the determination of ΔTrot temperature intervals, where rotation-crystalline states, characterized by different types of molecular motion, exist. The comparison of the ΔTrot values obtained by FTIR and DSC methods with the corresponding temperature-dependent X-ray powder diffraction data has shown their good agreement.

Original languageEnglish
Pages (from-to)25-30
Number of pages6
JournalJournal of Molecular Structure
Volume704
Issue number1-3
DOIs
Publication statusPublished - 18 Oct 2004

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Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry
  • Inorganic Chemistry

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