The first shell structure of He environment in tetracene-(He)N clusters manifested in REMPI spectra

Abstract

The satellite lines belonging to the clusters of tetracene Tc with He are revealed in REMPI spectra of Tc seeded in the supersonic expansion of He. These well-resolved peaks are shifted to the red by 35.7(9) cm−1°relative to the lines of bare Tc. The data by Even et al. (J. Chem. Phys.°115, 2069 (2001)) on the shift of absorption lines for clusters Tc-(He) N allow us to assign this peak to Tc-(He)8 cluster. This result confirms one of the earlier suggested structures of the first layer of He atoms surrounding tetracene in the He nanodroplet.