Nuclear Magnetic Resonance Study of the Structure of Simple Molecules Adsorbed on Metal Surfaces: Acetylene on Platinum (Slow Beat, Double Resonance, Multi Quantum)

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.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Wang, Po-Kang

• Physics, Nuclear

Language dc:language

eng

Identifier

(UMI)AAI8422171

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/77370