Organic cocrystals based on H-bonding as well as π-stacking interactions between 4, 4′-
bipyridine–pyromellitic acid (1) and 4, 4′-bipyridine–phthalic acid (2) are reported …

The effects of temperature (80–400 K) and pressure (up to 4.67 GPa) variations on stacks of
equidistant semiquinone radicals were studied by single-crystal X-ray diffraction using a salt …

Pressure is well known to dramatically alter physical properties and chemical behaviour of
materials, much of which is due to the changes in chemical bonding that accompany …

Charge-transfer complexes are the key elements of optoelectronic devices. Quinhydrone
(Qh) was the first discovered charge-transfer complex, and for its structure, the π-stacking …

The Cambridge Structural Database (CSD) is the largest repository of crystal structures of
organic and metal–organic compounds, containing over 1.1 million entries. Over 3300 of the …

This article is part of a collection of articles from the IUCr 2023 Congress in Melbourne,
Australia, and commemorates the 75th anniversary of the IUCr. The article is also included …

A series of six novel salts of 5, 6-dichloro-2, 3-dicyanosemiquinone (DDQ) radical anions
with aromatic cations is studied by structural characterization, magnetization, and …

In the search for new active pharmaceutical ingredients, the precise control of the chemistry
of cocrystals becomes essential. One crucial step within this chemistry is proton migration …

The crystal structure of potassium guaninate hydrate, K+· C5H4N5O−· H2O, was studied in
the pressure range of 1 atm to 7.3 GPa by single-crystal diffraction using synchrotron …

The crystal structure of lithium xanthinate hydrate was studied by single crystal X-ray
diffraction and Raman spectroscopy on cooling to 100 K and under compression to 5.3 GPa …