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Intramolecular soft modes and intermolecular interactions in liquid acetone

  • Resonant inelastic x-ray scattering spectra excited at the O1s(-1)pi* resonance of liquid acetone are presented. Scattering to the electronic ground state shows a resolved vibrational progression where the dominant contribution is due to the C-O stretching mode, thus demonstrating a unique sensitivity of the method to the local potential energy surface in complex molecular systems. For scattering to electronically excited states, soft vibrational modes and, to a smaller extent, intermolecular interactions give a broadening, which blurs the vibrational fine structure. It is predicted that environmental broadening is dominant in aqueous acetone.

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Author:Y. -P. Sun, Franz Hennies, Annette Pietzsch, B. Kennedy, Thorsten Schmitt, Vladimir N. Strocov, Joakim Andersson, Martin Berglund, Jan-Erik Rubensson, K. Aidas, F. Gel'mukhanov, M. Odelius, Alexander FöhlischORCiDGND
ISSN:1098-0121 (print)
Parent Title (English):Physical review : B, Condensed matter and materials physics
Publisher:American Physical Society
Place of publication:College Park
Document Type:Article
Year of first Publication:2011
Year of Completion:2011
Release Date:2017/03/26
Funder:Swedish Research Council (V.R.); Carl Tryggers Foundation; Magnus Bergvall Foundation; Natural Science Foundation of China [10974121]; National Basic Research Program of China [2006CB806000]; European Community [226716]
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Peer Review:Referiert