Analysis of diffraction data from three proteins indicates that the ice formed in internal crystal solvent is stacking-disordered. Application of a revised metric and algorithm for detecting ice from protein structure-factor data indicates that roughly 3.9% of PDB entries exhibit ice that is primarily hexagonal and 11.7% exhibit stacking-disordered ice.

Kinematical Hirshfeld atom refinement has been applied to electron diffraction data for the first time, but the effect of using an aspherical atom model is overshadowed by dynamical scattering effects. Dynamical independent atom model refinement leads to significantly improved structures, suggesting that dynamical refinement is also necessary to obtain the full advantage of using aspherical atom models.

Nanoconfinement dramatically modifies the behaviour of solvent within protein crystals, allowing biophysical measurements in the presence of liquid solvent at temperatures down to ∼200 K. When internal ice forms it is stacking-disordered, consistent with nucleation within deeply supercooled solvent, and ice does not form in solvent within ∼5 Å of the protein surface.

A full classification of the Delaunay simplex forms has been performed which involve the structure of ice Ih and ice Ic.

The crystal structures and magnetic properties of Mn_3−xFe_xGa alloys (x = 0, 0.2, 0.4, 0.6, 0.8, 1) can be extensively tailored by different heat-treatment conditions. This investigation sheds light on tuning the crystal structures of these materials via heat treatment towards wide functionalities for technological applications.

This article describes ice structures that can be obtained during self-assembly of cubic water clusters with D_2d and S₄ symmetry. The high potential for self-organization of these clusters has been established recently.

The stacking disorder in ice I samples is analysed in a quantitative fashion using pair distribution functions derived from neutron total scattering. This approach is found to have several advantages compared with the traditional analysis of powder diffraction data.

For ice nanotubes consisting of stacked n-membered rings, a new type of generalized symmetry and its violation are discussed.

Substantially more accurate and precise lattice parameters than have hitherto been available for H₂O and D₂O ice Ih are reported, along with an analysis of the thermal expansion and a detailed evaluation of sources of possible systematic errors.

A sample environment cell for long-duration X-ray diffraction studies of mineral precipitation in very slow cooling aqueous environments on Earth and other planetary bodies is described. The results are reported of a year-long commissioning experiment monitoring the dynamics of a freezing MgSO₄–H₂O solution at −28°C (245 K) in which meridianiite and epsomite are observed to form.