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

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

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


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
StatePublished - 1 Feb 2017


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


Dive into the research topics of 'Ionization energy and active cation vibrations of trans-2-fluorostyrene'. Together they form a unique fingerprint.

Cite this