Fermi resonance in ammonia adsorbed on silica surfaces

Zerda, T. W.; Brodka, A.; Hopkins, B. J.
June 1992
Journal of Chemical Physics;6/1/1992, Vol. 96 Issue 11, p8514
Academic Journal
Fermi resonance in ammonia adsorbed on silica of derivatized surfaces is investigated using Raman spectroscopy. From experimental band shapes the frequencies of hypothetical uncoupled modes and the Fermi coupling parameter are calculated and discussed in terms of surface coverage. It is shown that the Fermi resonance is strongly perturbed by interactions between ammonia and the silica surface. Surface hydroxyl groups and strained cyclic rings are identified as adsorption sites.


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