In the title compound, the cyclo­octene ring has a boat–chair conformation.

The title compound crystallizes in the monoclinic space group P21. The luteolin mol­ecule adopts a planar conformation, and the crystal structure is consolidated by extensive hydrogen-bonding inter­actions.

The single-crystal X-ray diffraction structures of an azo­benzene-bridged aza-18-crown-6 cryptand and its sodium complex are reported.

Two 2-oxo-2H-chromene derivatives were synthesized by acid–aniline coupling reactions. These two compounds were subjected to SXRD and Hirshfeld surface analysis to explore their inter­molecular inter­actions.

The mol­ecule of the title compound is nearly planar. In the crystal, the packing of mol­ecules is mainly ensured by N—H⋯O hydrogen bonds, which form R22 (8) graph-set motifs.

In the title compound, the crystal packing features C—H⋯Cl hydrogen bonds, which form R22(12) graph-set motifs.

In the title compound, the seven-membered 1,3-dithiepane ring adopts a distorted chair conformation. In the extended structure, inversion dimers linked by pairwise C—H⋯O hydrogen bonds generate R22(14) loops.

In the title compound, the dihedral angle between the 2H-chromen-2-one moiety and the C—CO2 ester grouping is 54.30 (5)°. In the crystal, the mol­ecules are linked by C—H⋯O hydrogen bonds forming C(6) [100] chains.

The title azo compound crystallizes in the triclinic space group P1 with two independent mol­ecules in the asymmetric unit. Hirshfeld surface analysis and energy framework calculations revealed key non-covalent inter­actions such as C—H⋯π, C—H⋯Br, π–π stacking, and halogen bonding, which consolidate the crystal structure.

The title compounds, C10H9Cl2FN2O3, (I), and C11H12Cl2N2O3, (II), are α,α-dihalo-β-diketone urea derivatives, which contain 4-fluoro­phenyl and p-tolyl groups, respectively. The conformation about the CO—CCl2—CO—Nu (O = keto, Cl2 = di­chloro, u = urea) bond is anti in (I) and gauche in (II). In the crystals of both compounds, O—H⋯O hydrogen bonds generate inversion dimers and the dimers are linked into (100) layers by N—H⋯O hydrogen bonds.

In the title compound, the crystal packing features strong N—H⋯O hydrogen bonds, which form C(4) chain-motifs.

In the title compound, the dihedral angle between the chromen-2-one ring system and the bromo­benzene ring is 10.29 (6)°. In the crystal, the mol­ecules are connected through C—H⋯O hydrogen bonds and π–π stacking inter­actions.

The crystal structure of luliconazole (LCZ) has been determined. The di­thiol­ane ring adopts an envelope conformation. In the crystal, two inter­molecular C—H⋯N hydrogen bonds are observed.

In the title salt, the complete cation and anion are generated by crystallographic inversion and twofold symmetry, respectively. In the crystal, the di­hydrogen diphosphate anions are linked by O—H⋯O hydrogen bonds, generating (001) layers. The organic cations bond to the inorganic layers by way of N—H⋯O and C—H⋯O hydrogen bonds.

A mononuclear cadmium(II) complex [CdLCl], where HL = 2-[bis­(pyridin-2-ylmeth­yl)amino]­ethane-1-thiol, was synthesized and characterized by single-crystal X-ray diffraction and Hirshfeld analysis.

The title compound, which was obtained by the reaction between 1,10-phenanthroline and phenyl­tin trichloride in methanol, exhibits intra­molecular inter­actions involving the chlorine and hydrogen atoms. Crystal cohesion is ensured by inter­molecular C—H⋯Cl hydrogen bonds, as well as Y—X⋯π and π-stacking inter­actions

The structure of the title 1–1′-binaphthyl derivative was refined with non-spherical atomic form factors computed using the DFT method at the PBE0/def2-TZVP basis set level.

In the title compound, the dihedral angle between the coumarin ring system and the penta­noate ring is 36.26 (8)°. A short intra­molecular C—H⋯O contact is observed.

The crystal structure of the mol­ecular complex between 2-(allyl­thio)­pyridine and 1,2,4,5-tetra­fluoro-3,6-di­iodo­benzene, which exhibits an N⋯I halogen bond, has been determined at 100 K.

The title compound, C8H11PS, which melts below room temperature, was crystallized at low temperature. The P—S bond length is 1.9623 (5) Å and the major contributors to the Hirshfeld surface are H⋯H, S⋯H/H⋯S and C⋯H/H⋯C contacts.

The title salt features N—H⋯Cl and C—H⋯Cl cation-to-anion hydrogen bonds and complementary anion-to-cation Cl⋯π inter­actions.