Berlin 2001 – scientific programme
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MO: Molekülphysik
MO 1: Posters Monday: Clusters, Fullerenes and Nanotubes
MO 1.3: Poster
Monday, April 2, 2001, 12:30–15:00, AT3
Infrared spectroscopy of formic acid in liquid He-droplets — •Frank Madeja1, Roger Miller2, and Martina Havenith-Newen1 — 1Lehrstuhl für Physikalische Chemie 2, Ruhr-Universität Bochum, Universiätsstraße 150, D-44780 Bochum — 2Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599
Rotationally resolved spectra of h2- and d1-formic acid embedded in liquid helium droplets have been recorded in the spectral region of the O-H (ν1) and C-H (ν2) stretch vibrations. Fermi-resonance between the ν1-band of h2-formic acid and the combination bands ν2 +ν7 and ν2 +ν9 has been observed. This is the first time that Fermi-resonance has been observed in superfluid helium cluster. These results yield direct information on vibrational relaxation dynamics of Fermi disturbed systems inside a helium matrix. Additionally two open structures of formic acid dimer has been found. Recent results will be presented on this poster.