The rotationally resolved electronic spectra of the electronic origin of the 7-azaindole- and of the 7-azaindole- clusters have been measured in a molecular beam. From the rotational constants the structures in the and electronic states were determined as cyclic with the pyrrolo NH and the pyridino N atoms being bridged by one and two water molecules, respectively. Excited state lifetimes of about for both clusters have been found. In the spectrum of the 7-azaindole- cluster a splitting of the rovibronic band is observed, which can be traced back to a large amplitude motion, involving the out-of-plane hydrogen atoms of the water chain. Both the changes of the rotational constants upon electronic excitation and the orientation of the transition dipole point to a solvent induced state reversal between the and the states upon microsolvation.
Rotationally resolved electronic spectroscopy of water clusters of 7-azaindole
Thi Bao Chau Vu, Ivo Kalkman, W. Leo Meerts, Yuriy N. Svartsov, Christoph Jacoby, Michael Schmitt; Rotationally resolved electronic spectroscopy of water clusters of 7-azaindole. J. Chem. Phys. 7 June 2008; 128 (21): 214311. https://doi.org/10.1063/1.2928637
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