Enhanced Raman Spectroscopic Study Of Rotational Isomers On Metal Surfaces

B. H. Loo; Y. G. Lee; D. O. Frazier

doi:10.1117/12.961136

30 June 1986 Enhanced Raman Spectroscopic Study Of Rotational Isomers On Metal Surfaces

B. H. Loo, Y. G. Lee, D. O. Frazier

Proceedings Volume 0620, Laser Applications in Chemistry and Biophysics; (1986) https://doi.org/10.1117/12.961136
Event: O-E/LASE'86 Symposium, 1986, Los Angeles, CA, United States

Abstract

Surfaced-enhanced Raman spectroscopy has been used to study rotational isomers of succinonitrile and N-methyl-thioacetamide on Cu and Ag surfaces. Both the gauche and trans conformers of succinonitrile are found to chemisorb on the metal surface. The doubly degenerate v(CEN) in the free molecules is removed when succinonitrile adsorbs on copper, which indicates that the two CEN groups are no longer chemically equivalent. Both conformers are found to coordinate to the copper surface through the n-system of one of the two CEN groups. In the case of N-methyl-thioacetamide, the population of the cis isomer is greatly increased on Cu and Ag surfaces. This is probably due to surface-induced cistrans isomerization in which the predominant trans isomer is converted to the cis isomer.

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B. H. Loo, Y. G. Lee, and D. O. Frazier "Enhanced Raman Spectroscopic Study Of Rotational Isomers On Metal Surfaces", Proc. SPIE 0620, Laser Applications in Chemistry and Biophysics, (30 June 1986); https://doi.org/10.1117/12.961136

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