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Title: Some chemical applications of magnetic resonance
Author: Halliday, James D.
Awarding Body: University of Oxford
Current Institution: University of Oxford
Date of Award: 1968
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This thesis describes the construction of a very versatile broadline 10-100MHz frequency swept nuclear magnetic resonance spectrometer equipped with a 50 kilogauss superconducting magnet. Measurements have been made, using this spectrometer, to obtain chemical shifts of the 133Cs ion to high precision and to very low concentrations (.005M) in aqueous and non-aqueous media. Remarkable effects have been observed and a theory is proposed that can predict the ion-ion contribution to the chemical shift in solution. Chapter 1 describes the n.m.r. experiment and discusses factors affecting the signal to noise ratio that are relevant for the construction of the spectrometer. Chapter 2 gives a brief description of the properties of the superconducting materials used to wind the magnet for the spectrometer and describes the construction and handling of the magnet and its related components. Chapter 3 describes experiments made on the superconducting magnet to determine and improve its homogeneity. Chapter 4 gives an account of the construction of the spectrometer and cites examples of its performance. Chapter 5 outlines a theory proposed by Dr. R.R. Sharp of this research group to interpret the cesium chemical shifts observed. Chapters 6 and 7 describe the measurements of cesium chemical shifts in aqueous and non-aqueous media. These shifts are interpreted in terms of the theory proposed in chapter 5. The Appendix contains the raw experimental data obtained for this thesis.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available