Abstract

AbstractThe method of nuclear magnetic resonance (N.M.R.) was first successfully demonstrated by Bloch, Hansen, and Packard and Purcell, Torrey, and Pound in 1946. Although the initial interest was concerned with the determination of nuclear magnetic moments, it was soon realised that the nuclei were excellent probes for the investigation of magnetic and electric fields in bulk materials. Application to a wide range of chemical and physical problems has been possible. The greatest impact has probably been in the field of organic chemistry, where the method provides a powerful tool for the identification and structure determination of complex molecules. This success is largely due to the favourable magnetic properties and frequent occurrence of the hydrogen nucleus or proton and the extremely high resolution attainable in diamagnetic liquid samples.

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