Mass-selective ionization-detected stimulated Raman spectroscopy of benzene trimer and higher clusters

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.464544· OSTI ID:6873553

Henson, B F; Venturo, V A; Hartland, G V; Felker, P M ^[1]

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1. Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90024-1569 (United States)

We present the results of mass-selective, ionization-detected stimulated Raman spectroscopies on jet-cooled benzene clusters from the trimer to the octamer. The data pertain to the fundamentals of the totally symmetric ring-breathing ([nu][sub 1]) and C--H stretch ([nu][sub 2]) modes of benzene and provide information about geometrical structure and vibrational dynamics. For the trimer, the results indicate a species in which all three benzenes reside in equivalent sites. For the higher clusters the results point to geometries involving two or more inequivalent sites. The [nu][sub 1]-excited trimer is found to decay on a nanosecond, or longer, time scale. The [nu][sub 2]-excited trimer decays on a time scale of greater than 5 ps. Similar timescales characterize the decays of the [nu][sub 2]-excited tetramer and pentamer.

• DOE Contract Number: FG03-89ER14066
• OSTI ID: 6873553
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 98:11; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
AROMATICS
BENZENE
COHERENT SCATTERING
COOLING
DETECTION
ENERGY LEVELS
EXCITED STATES
GEOMETRY
HYDROCARBONS
IONIZATION
JETS
MASS
MATHEMATICS
MOLECULAR CLUSTERS
ORGANIC COMPOUNDS
RAMAN SPECTRA
RELAXATION
SCATTERING
SPECTRA
VIBRATIONAL STATES