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Title: NEXAFS and EELS study of the orientation of sulfur dioxide on Ag(110)

Abstract

The angular dependence of the b{sub 1}* resonance in the near-edge X-ray absorption fine-structure (NEXAFS) spectra indicates that the plane of the SO{sub 2} molecule is perpendicular to the plane of the surface and perpendicular to the close-packed direction of the Ag(110) surface ((1{bar 1}0) azimuth). SO{sub 2} forms a {pi}-acceptor bond between the 3b{sub 1} molecular orbital of SO{sub 2} and the Ag(110) surface, and the b{sub 1}* resonance corresponds to transitions into the antibonding combination of this {pi}-acceptor bond while still retaining its strong angular dependence on the orientation of the {rvec E} vector. This antibonding combination lies 531.9 eV above the O(1s) level. Off-specular electron energy loss spectroscopy (EELS) measurements confirm the dipole activity of the observed vibrational modes and show that the C{sub 2{nu}} axis of the SO{sub 2} molecule must be oriented along the surface normal.

Authors:
;  [1]; ;  [2]
  1. Stanford Univ., CA (United States)
  2. IBM Almaden Research Center, San Jose, CA (United States)
Publication Date:
OSTI Identifier:
5953687
DOE Contract Number:  
AC03-82ER13000
Resource Type:
Journal Article
Journal Name:
Journal of Physical Chemistry; (United States)
Additional Journal Information:
Journal Volume: 95:9; Journal ID: ISSN 0022-3654
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES; SILVER; SURFACE PROPERTIES; SULFUR DIOXIDE; CHEMISORPTION; DIPOLES; ENERGY-LOSS SPECTROSCOPY; EXPERIMENTAL DATA; MILLER INDICES; MOLECULAR ORBITAL METHOD; MOLECULAR STRUCTURE; ORIENTATION; OSCILLATION MODES; SURFACES; THEORETICAL DATA; X-RAY SPECTROSCOPY; CHALCOGENIDES; CHEMICAL REACTIONS; DATA; ELECTRON SPECTROSCOPY; ELEMENTS; INFORMATION; METALS; MULTIPOLES; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; SEPARATION PROCESSES; SORPTION; SPECTROSCOPY; SULFUR COMPOUNDS; SULFUR OXIDES; TRANSITION ELEMENTS; 400201* - Chemical & Physicochemical Properties; 540120 - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-)

Citation Formats

Solomon, J L, Madix, R J, Wurth, W, and Stoehr, J. NEXAFS and EELS study of the orientation of sulfur dioxide on Ag(110). United States: N. p., 1991. Web. doi:10.1021/j100162a046.
Solomon, J L, Madix, R J, Wurth, W, & Stoehr, J. NEXAFS and EELS study of the orientation of sulfur dioxide on Ag(110). United States. https://doi.org/10.1021/j100162a046
Solomon, J L, Madix, R J, Wurth, W, and Stoehr, J. Thu . "NEXAFS and EELS study of the orientation of sulfur dioxide on Ag(110)". United States. https://doi.org/10.1021/j100162a046.
@article{osti_5953687,
title = {NEXAFS and EELS study of the orientation of sulfur dioxide on Ag(110)},
author = {Solomon, J L and Madix, R J and Wurth, W and Stoehr, J},
abstractNote = {The angular dependence of the b{sub 1}* resonance in the near-edge X-ray absorption fine-structure (NEXAFS) spectra indicates that the plane of the SO{sub 2} molecule is perpendicular to the plane of the surface and perpendicular to the close-packed direction of the Ag(110) surface ((1{bar 1}0) azimuth). SO{sub 2} forms a {pi}-acceptor bond between the 3b{sub 1} molecular orbital of SO{sub 2} and the Ag(110) surface, and the b{sub 1}* resonance corresponds to transitions into the antibonding combination of this {pi}-acceptor bond while still retaining its strong angular dependence on the orientation of the {rvec E} vector. This antibonding combination lies 531.9 eV above the O(1s) level. Off-specular electron energy loss spectroscopy (EELS) measurements confirm the dipole activity of the observed vibrational modes and show that the C{sub 2{nu}} axis of the SO{sub 2} molecule must be oriented along the surface normal.},
doi = {10.1021/j100162a046},
url = {https://www.osti.gov/biblio/5953687}, journal = {Journal of Physical Chemistry; (United States)},
issn = {0022-3654},
number = ,
volume = 95:9,
place = {United States},
year = {1991},
month = {5}
}