Nuclear Magnetic Resonance Study of the Structure of Simple Molecules Adsorbed on Metal Surfaces: Acetylene on Platinum (Slow Beat, Double Resonance, Multi Quantum)
Wang, Po-Kang
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https://hdl.handle.net/2142/77370
Description
Title
Nuclear Magnetic Resonance Study of the Structure of Simple Molecules Adsorbed on Metal Surfaces: Acetylene on Platinum (Slow Beat, Double Resonance, Multi Quantum)
Author(s)
Wang, Po-Kang
Issue Date
1984
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Nuclear
Language
eng
Abstract
We have used NMR to determine the structure of acetylene (HC(TBOND)CH) adsorbed at room temperature on small platinum particles by studying the ('13)C-('13)C, ('13)C-('1)H, and ('1)H-('1)H dipolar interactions among the nuclei in the adsorbed molecules. We find a model of 77% CCH(,2) and 23% HCCH to be the only one consistent with all of our data. The C-C bond length of the majority species, CCH(,2), is determined as 1.44 (+OR-) 0.02 (ANGSTROM), midway between a single and double bond, suggesting that both carbon atoms bond to the surface.
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