Rydberg bands in the UV spectrum of thiophene and its derivatives

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Abstract

The ultraviolet spectra of twelve halogenothiphenes have been recorded in the vapour phase. New transitions were observed in the region 45 000 to 50 000 cm-1 which are absent in solution spectra and are assigned to Rydberg transitions. There is a good agreement of the band positions with those calculated from adiabatic ionization potential, using the quantum defect of thiphene. A study of the vibronic structure does not rule out the possible existence of two Rydberg-transitions. The vibrational frequencies of the fine structure are close to the observed values in the UP spectrum. The other members of the Rydberg series can be found in the far ultraviolet spectrum of thiophene.

Original languageEnglish
Pages (from-to)253-259
Number of pages7
JournalJournal of Molecular Structure
Volume140
Issue number3-4
DOIs
Publication statusPublished - 1986

Fingerprint

Thiophenes
Ionization potential
Vibrational spectra
Thiophene
thiophenes
Vapors
ultraviolet spectra
Derivatives
Defects
Rydberg series
ionization potentials
fine structure
vapor phases
defects

ASJC Scopus subject areas

  • Structural Biology
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Materials Science (miscellaneous)
  • Atomic and Molecular Physics, and Optics

Cite this

Rydberg bands in the UV spectrum of thiophene and its derivatives. / Nyulászi, L.; Veszprémi, T.

In: Journal of Molecular Structure, Vol. 140, No. 3-4, 1986, p. 253-259.

Research output: Contribution to journalArticle

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