T. Barstis, L. Grace, T. M. Dunn
Apr 1, 1994
Citations
0
Influential Citations
7
Citations
Journal
The Journal of Physical Chemistry
Abstract
The excitation spectra of 4-, 5-, and 6-fluoroindole have been obtained with jet-cooled one-color resonant two-photon ionization (1 C R2PI) time-of-flight mass spectrometry (TOFMS). The 1C R2PI spectra have been vibronically analyzed in the spectral region of 0 0 0 to 0 0 0 +842 cm -1 in 4-fluoroindole and 0 0 0 to 0 0 0 +∼1100 cm -1 in 5- and 6-fluoroindole. All transitions observed in the 4-, 5-, and 6-fluoroindole excitation spectra are assigned as 1 L b ← 1 A' transitions. Assignments of both ground- and excited-state vibrational modes were based upon those previously assigned for indole. 4.9 As with indole, the ground-state vibrational frequencies were also calculated using ab initio methods as well as being obtained from infrared and Raman studies