Deuterium nuclear magnetic resonance spin echo spectroscopy in molecular crystals
The effects of quadrupole, dipole, chemical shielding and spin–lattice interactions on the properties of the deuterium spin echo response to a 90°–τ–90°90° pulse sequence in powdered molecular crystals are investigated. Procedures are delineted for the selective measurement of these interactions. It is argued that these experiments should contribute to the realisation of the potential of deuterium n.m.r. spectroscopy for studying orientational disorder and motion in molecular solids.