Optics and Spectroscopy

, Volume 114, Issue 4, pp 509–521

Raman spectra of alkyl-substituted azaoxa[8]circulenes: DFT calculation and experiment

  • V. A. Minaeva
  • B. F. Minaev
  • G. V. Baryshnikov
  • M. Pittelkow
Spectroscopy of Atoms and Molecules
  • 140 Downloads

Abstract

Raman lines in spectra of recently synthesized azaoxa[8]circulenes have been assigned in detail on the basis of obtained experimental data and B3LYP/6-31G(d) calculations. Particular features of the structure of three azaoxa[8]circulenes have been considered based on data of X-ray structural analysis and DFT calculations. Regularities in changes of the geometric parameters have been found for benzene, furan, pyrrole, and naphthalene rings that occur upon formation of the macroring in comparison with free molecules. Raman spectra of macrorings have been shown to contain a characteristic set of lines the frequencies of which differ from those of analogous lines in Raman spectra of benzene, pyrrole, furan, and naphthalene. Results of quantum-chemical calculations agree well with experimental data with respect to line frequencies and intensities due to recalculation of Raman activities of normal vibrations into intensities of Raman lines.

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Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  • V. A. Minaeva
    • 1
  • B. F. Minaev
    • 1
  • G. V. Baryshnikov
    • 1
  • M. Pittelkow
    • 2
  1. 1.Bohdan Khmelnytsky National UniversityCherkasyUkraine
  2. 2.Copenhagen UniversityCopenhagenDenmark

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