Vibration wavenumbers of 3-aminobenzotrifluoride in the ground and S1 electronic states from its infrared, Raman, and supersonic jet S1- S0 fluorescence spectra

Abstract

Raman and infrared spectra of 3-aminobenzotrifluoride, in the liquid phase, and single vibronic level fluorescence spectra, in a supersonic jet, have been obtained and interpreted to give a fairly complete set of vibrational assignments in S 0. These include the observation of the I 2 0 band in fluorescence, where ν 1 is the NH 2-inversion vibration, in agreement with a previous interpretation of the gas phase far infrared spectrum. A strong Fermi resonance between one quantum of the a′CCF 3 bending vibration and two quanta of the a″CCF 3 bending vibration has been identified in S 1.