Abstract
We interpret the polarization infrared spectrum of linear molecules adsorbed on ionic substrates on the basis of semi-classical interaction potentials. The frequency shifts and splittings and the intensities of the infrared signals are analyzed in terms of strong electrostatic surface fields with the additional influence of the lateral coupling between admolecules. Application to the CO2 monolayer adsorbed on clean NaCl and MgO(100) surfaces is discussed. A consistent quantitative comparison between calculated and measured peak intensities of the polarization spectrum requires the presence of two types of domains for the layer, oriented along the perpendicular step directions 〈100〉 and 〈010〉 with a relative weight 1:4. This corroborates the experimental assignment of the parallel and perpendicular polarized peaks associated with the bending and asymmetric stretching vibrational modes of the admolecule.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
