Resonant two-photon ionization spectroscopy of small benzene—(SF6)m clusters

✍ Scribed by V. Stert; W. Radloff; H.-H. Ritze; Th. Freudenberg

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 766 KB
• Volume: 204
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(93)90011-o

✦ Synopsis

Vibrationally resolved electronic spectra of small heteroclusters B.S, of benzene (B) and sulfur hexafluoride (S) have been obtained by resonant two-photon ionization spectroscopy. Some spectroscopic details of the BISl and B,S2 complexes were studied in the spectral regions near the So-&, 08 and 6: transitions of the benzene monomer. A nonvanishing 0: vibrational band has been observed for BIS, with a C,, equilibrium symmetry. For this cluster we have determined the ionization potential IP=9.180~0.005 eV as well as the binding energies of B,S, and BIS:. In view ofthe geometry ofthe complexes B&, (m= l-4) we found that until m= 3 the SF6 molecules are localized on one side of the benzene molecular plane, while for B& the symmetrical arrangement with two S2 groups on each side is favoured. The fragmentation of (B,S,) + clusters is restricted to the loss of S, molecules while emission of 8, molecules has not been observed.