Abstract
The multidimensional wave packet dynamics of salicylaldimine following ultrafast infrared laser excitation of the OH-bending and -stretching vibrations is discussed. A seven-dimensional Cartesian reaction surface Hamiltonian in the diabatic representation is employed comprising the five skeleton normal modes which have the greatest influence on the in-plane hydrogen motion. For the numerical solution of the time-dependent Schrodinger equation the multiconfiguration time-dependent Hartree method is used. Coherent wave packet dynamics is observed after excitation of the OH-bending fundamental transition, whereas stiong anharmonic mode couplings to the stretching transition cause intramolecular vibrational energy redistribution on a time scale of about 700 fs.
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