Beginning with the diffuse scattering, Figure depicts displacements along the chain axis that give rise to diffuse scattering streaks in the diffraction pattern perpendicular to the chain axis. This schematic follows established models for dynamical disorder in molecular crystals exhibiting linear displacements, e.g., due to vibrational modes. The linear displacement of the molecule creates a range of interplanar angles (δ, ε, θ) and interplanar spacings (l, m, n) that contribute to a line of diffuse diffraction intensity reflecting the distribution of chain displacements. A simplified representation of C31H64 chain orientations viewed along [100] and the corresponding diffraction pattern are shown in Figure to illustrate how this model relates to the real space packing of the chains and to the resulting diffraction pattern. While the SED data do not distinguish between static and dynamical disorder, the absence of correlation with the loss of 00ℓ intensity points to dynamical displacements. Previous work on waxes has likewise shown a decrease in diffuse scattering in SAED when cooled, suggesting that the displacements likely arise from dynamical disorder.