Abstract

Dispersed fluorescence and IR dip spectra of seven conformers of tyramine were measured in a supersonic jet. Observed vibrational bands are assigned based on quantum chemical calculations. The vibrational frequency of out-of-plane CH bending in the benzene ring shows characteristic shifts according to the conformation of C(beta)-C(alpha), while that of CH stretching in the methylene chain reflects the conformation of N-C(beta). From these vibrational frequencies, assignments of the conformers observed in the S(1)-S(0) laser induced fluorescence spectrum are discussed.

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