〈761〉 Nuclear Magnetic Resonance Spectroscopy
INTRODUCTION
NMR spectroscopy is an analytical method based on the electromagnetic properties of certain atomic nuclei. Like other types of spectroscopy, it involves the absorption or emission of electromagnetic energy at characteristic frequencies, providing structural information. However, NMR spectroscopy differs from other spectroscopic methods in that the characteristic frequencies only arise when nuclear spins are placed in an external magnetic field and irradiated with a radio frequency source.