The crystal structure of the hydrated chloride salt of cathinone α-PVP is presented for the first time but has been known on the market of psychoactive substances for a long time. The chloride salt of α-D2PV was crystallized without water molecules in the crystal structure, which allowed a comparison with the hydrated form and thus a better understanding of its properties.

A theoretical candidate for a new Ni oxide superconductor, Sr₃Ni₂O₅Cl₂, has been synthesized for the first time under high-pressure conditions (10 GPa and 1673 K). While it adopts the tetragonal Ruddlesden–Popper phase structure predicted by theoretical calculations, resistance measurements revealed no superconductivity down to 2 K under pressures up to 24 GPa.

Six 5,5-dimethylhydantoin derivatives were investigated towards the search for structural features responsible for affinity for α₁-adrenoreceptors. Compounds with higher activity prefer an extended conformation, which leads to larger distances between the end aromatic rings, while for compounds with lower affinity, the distances between the end aromatic rings are shorter.

Two salts of 2-amino-4-methoxy-6-methylpyrimidinium were analysed with respect to their intermolecular interactions using Hirshfeld surface analysis. The pharmacokinetic properties and drug-like nature of the salts were confirmed by in-silico ADME prediction.

Using the modified reference intensity ratio (RIR) method, it is found that by increasing the number of diffraction peaks used, the quantitative deviation gradually decreases from 33% to less than 1%. The modified RIR method greatly reduces the influence of preferred orientation on quantitative phase analysis (QPA) and improves the quantitative accuracy.