Observation of an isomerizing double-well quantum system in the condensed phase

Author:

Lau Jascha A.12ORCID,Choudhury Arnab12ORCID,Li Chen2ORCID,Schwarzer Dirk2ORCID,Verma Varun B.3ORCID,Wodtke Alec M.124ORCID

Affiliation:

1. Institute for Physical Chemistry, University of Göttingen, Tammannstr. 6, 37077 Göttingen, Germany.

2. Department of Dynamics at Surfaces, Max-Planck Institute for Biophysical Chemistry, Am Faßberg 11, 37077 Göttingen, Germany.

3. National Institute of Standards and Technology, Boulder, CO 80305, USA.

4. International Center for Advanced Studies of Energy Conversion, Georg-August University of Göttingen, Tammannstraße 6, 37077 Göttingen, Germany.

Abstract

Upside-down molecules on a salt surface The quantum states of molecules are usually measured in gas-phase studies to minimize collisions that would blur the spectra. However, for carbon monoxide (CO) molecules adsorbed on a NaCl(100) surface, infrared emission from even high vibrational states can be resolved. In quantum-state resolved spectra, Lau et al. found that infrared-laser excitation of a monolayer of CO adsorbed on NaCl(100) forms an isomer in which CO binds to Na + through its O atom in an upside-down configuration (see the Perspective by Wu). These results could be understood with a simple vibrationally adiabatic electrostatic theory, making this system convenient for studies of the isomerization chemistry. Science , this issue p. 175 ; see also p. 148

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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