| Literature DB >> 33602972 |
Viktoriia Savchenko1,2,3, Iulia Emilia Brumboiu4,5, Victor Kimberg6,7,8, Michael Odelius9, Pavel Krasnov10,11, Ji-Cai Liu12, Jan-Erik Rubensson13, Olle Björneholm13, Conny Såthe14, Johan Gråsjö13,15, Minjie Dong13, Annette Pietzsch16, Alexander Föhlisch16,17, Thorsten Schmitt18, Daniel McNally18, Xingye Lu18, Sergey P Polyutov10,11, Patrick Norman4, Marcella Iannuzzi19, Faris Gel'mukhanov4,10,11, Victor Ekholm13,14.
Abstract
Quenching of vibrational excitations in resonant inelastic X-ray scattering (RIXS) spectra of liquid acetic acid is observed. At the oxygen core resonance associated with localized excitations at the O-H bond, the spectra lack the typical progression of vibrational excitations observed in RIXS spectra of comparable systems. We interpret this phenomenon as due to strong rehybridization of the unoccupied molecular orbitals as a result of hydrogen bonding, which however cannot be observed in x-ray absorption but only by means of RIXS. This allows us to address the molecular structure of the liquid, and to determine a lower limit for the average molecular chain length.Entities:
Year: 2021 PMID： 33602972 PMCID： PMC7893077 DOI： 10.1038/s41598-021-83248-3
Source DB: PubMed Journal: Sci Rep ISSN： 2045-2322 Impact factor: 4.379