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CF3-torsional potentials of 2-aminobenzotrifluoride in the S0 and S1 electronic states from fluorescence spectra in a supersonic jet

✍ Scribed by Robert D. Gordon; J. Michael Hollas; Paulo J.A. Ribeiro-Claro; José J.C. Teixeira-Dias

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
436 KB
Volume
211
Category
Article
ISSN
0009-2614

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✦ Synopsis

Both fluorescence excitation and dispersed fluorescence spectra of 2-aminobenzotrifluoride in a supersonic jet show quite extensive vibrational structure due to the CF,-torsional motion in the S, and So electronic states, respectively. This structure has been assigned and results in CF,-torsional potentials with parameters I',=450 cm-', V6=83 cm-' in S, and I',=240 cm-', V,= -67 cm-' in S,. There is some evidence which points to interaction between an amino-hydrogen atom and the fluorine atoms: this may bc due to hydrogen bonding or steric effects, or both.

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