Ionization energy and active cation vibrations of trans-2-fluorostyrene

Pei Ying Wu, Sheng Yuan Tzeng, Ya Chu Hsu, Wen Bih Tzeng

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6 Scopus citations

Abstract

We applied the two-color resonant two-photon mass-analyzed threshold ionization (MATI) technique to record the cation spectra of trans-2-fluorostyrene by ionizing via six intermediate vibronic levels. The adiabatic ionization energy was determined to be 69 304 ± 5 cm−1. The distinct MATI bands at 67, 124, 242, 355, 737, 806, 833, and 993 cm−1 were assigned to the active cation vibrations related to out-of-plane substituent-sensitive bending vibrations and in-plane ring deformation and bending motions. Many combination vibrations were also observed. Our experimental results suggest that the molecular geometry and vibrational coordinates of the trans-2-fluorostyrene cation in the D0 state resemble those of the neutral species in the S1 state.

Original languageEnglish
Pages (from-to)3-7
Number of pages5
JournalJournal of molecular spectroscopy
Volume332
DOIs
StatePublished - 1 Feb 2017

Keywords

  • 2-Fluorostyrene
  • Cation spectroscopy
  • Multiphoton ionization
  • Threshold ionization

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