Low frequency backbone vibrations of individual conformational isomers: tryptamine.
The low frequency vibrations of the ethylamino backbone of six conformers of tryptamine have been studied in the ground and excited states using dispersed fluorescence spectroscopy, rotationally resolved laser induced fluorescence, and ab initio calculations. Four low frequency vibrational modes of the backbone, which involve torsional and librational motions of the ethylamino group, have been identified. The three anti conformers show a substantially different vibrational pattern than the four conformers in which the amino group is in gauche position with respect to the pyrrole and the phenyl ring, respectively.
Schmitt
Michael
M
Heinrich-Heine-Universität, Institut für Physikalische Chemie I, D-40225 Düsseldorf, Germany. mschmitt@uni-duesseldorf.de
Feng
Ke
K
Böhm
Marcel
M
Kleinermanns
Karl
K
D007536:Isomerism; D008958:Models, Molecular; D008968:Molecular Conformation; D013050:Spectrometry, Fluorescence; D014363:Tryptamines / Q000737:chemistry*
D014363:Tryptamines; C030820:tryptamine