The technique of neutron scattering has in recent years been applied with success to the study of molecular spectroscopy. The theoretical basis and experimental procedures of this technique are reviewed. Particular attention is paid to those aspects that clarify the role of neutron scattering as a complementary tool to the well-established methods of Raman and ir spectroscopy. Measurements on a variety of systems are presented as examples of its applicability. These various systems include (a) polymers, (b) torsional oscillators, (c) metal hydrides, (d) hydrogen-bonded crystals, and (e) dispersion curves of molecular crystals.
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