Theoretical study of the hydrogen atom transfer in the heterodimer indole-ammonia and comparison with experimental results.
Ab initio calculations on the heterodimer C8H6NH...NH3 are carried out for its ground, the excited pisigma*, and the ground cationic electronic states, enabling the description of hydrogen or proton transfer, respectively. Two-dimensional quantum-dynamical computations on the pisigma* potential surface help one to understand the mechanism and the time scale of the hydrogen transfer. Subsequent decay processes are discussed depending on the vibrational excitation of the ammonium constituent. Finally, the theoretical results obtained are used for the interpretation of the time-dependent signals observed in femtosecond pump-probe experiments.
Max Born Institute, Max-Born-Strasse 2A, D-12489, Berlin-Adlershof, Germany.
H-H
HH
Ritze
H
H
Lippert
V
V
Stert
W
W
Radloff
I V
IV
Hertel