Molecular Interaction Dependence of Liquid Acetic acid and Methyl Formate

We performed theoretically to reproduce site-selective X-ray emission spectroscopy (XES) spectra of acetic acid and methyl formate in the liquid phase at two oxygen K-edge (OC=O and OOH,OCH3) to observe the intermolecular interaction dependence of XES spectra. Structure sampling as a cluster model was performed from a snapshot of molecular dynamics simulation. Relative intensities of XES with core-hole excited state dynamics simulation were calculated using density functional theory. We found that theoretical XES spectra were well reproduced experimentally.