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oai:mountainscholar.org:10217/1998992025-12-30T03:37:34Zcom_10217_100532com_10217_100000com_10217_100367com_10217_100303col_10217_100536col_10217_100368

Bronnimann, Charles E., author 2020-01-21T22:25:16Z 2020-01-21T22:25:16Z 1986 https://hdl.handle.net/10217/199899 https://doi.org/10.25675/3.024711 Covers not scanned. Item deaccessioned after digitization. The work described in this thesis falls into two largely unrelated categories. Part I of the thesis reports unusually fast 13C spin diffusion in adamantane. A calculation of the 13C spin-diffusion rate from first order perturbation theory is presented and compared to the experimental data. There is good agreement between calculation and experiment for relatively small mixing times. Motional averaging of 13C- 1H dipolar coupling is found to be responsible for the unusually efficient 13C spin-diffusion in adamantane. Further enhancement of 13C spin-diffusion should be possible by carrying out mixing in the rotating frame. This is experimentally verified for adamantane. Part II discussed 13C NMR of methanol adsorbed on HY zeolite. Three species were distinguished on the basis of their different spin-lattice, spin-spin (spin diffusion) and chemical properties shift. These were: a species exhibiting liquid-like mobility, a species chemically adsorbed onto the wall of the large cage of the zeolite, and a species chemically adsorbed onto the wall of the small cage of the zeolite. doctoral dissertations English eng Colorado State University. Libraries Catalog record number (MMS ID): 991021208939703361 QD305.H6 B76 1986 1980-1999 Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. Adamantane Rotational motion Zeolites Methanol Cage hydrocarbons Spin dynamics in solids Text Doctor of Philosophy (Ph.D.) Doctoral Chemistry Colorado State University This Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). open.access