VAPOR ABSORPTION SPECTRA AND OSCILLATOR STRENGTHS OF NAPHTHALENE, ANTHRACENE, AND PYRENE

  • Ferguson J
  • Reeves L
  • Schneider W
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Abstract

Vapor absorption spectra have been measured for naphthalene, anthracene, and pyrene using a modified Beckman DU Spectrometer. Vapor concentrations were determined using published vapor pressure data, and oscillator strengths were computed for a total of five transitions in the three molecules. It was found that the vapor oscillator strengths are considerably lower than in solution by a factor greater than that predicted by classical theory. An absorption region at about 41,000 cm. −1 in anthracene is tentatively assigned as the 1 B 2u + state calculated by Pariser to lie at 42,400 cm. −1 .

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Ferguson, J., Reeves, L. W., & Schneider, W. G. (1957). VAPOR ABSORPTION SPECTRA AND OSCILLATOR STRENGTHS OF NAPHTHALENE, ANTHRACENE, AND PYRENE. Canadian Journal of Chemistry, 35(10), 1117–1136. https://doi.org/10.1139/v57-152

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