The structure of a tris­[hexa­kis­(imidazole)­cobalt(II)] bis­(benzene-1,3,5-tri­carboxyl­ate) compound was determined by single-crystal X-ray diffraction.

The (modified) triazine ring in the title compound is planar. The packing involves classical and ‘weak' hydrogen bonds, together with π contacts to the triazine ring.

In the complex [Ag(2AB)2]NO3·(2AB)2 (2AB: 2-amino­benzoxazole), the central silver atom is coordinated monodentately by two 2AB ligands forming a linear geometry. The extended structure features N—H⋯N, N—H⋯π and π–π inter­actions.

Single-crystal X-ray diffraction studies were performed on two new forms of tinidazole: triclinic and hemihydrate, and their structures were compared to that of the known monoclinic form.

Treatment of a tetra­(aceto­nitrile)­copper(I) precursor with excess xylyl isocyanide forms the title tetra­(isocyanide)copper(I) complex, which was characterized structurally and spectroscopically.

The newly synthesized compound (l-HisH2)CuI3·H2O (where l-HisH2 = l-histidinium) possesses a rare one-dimensional A2CuX3-type structure built from chiral left-handed helical chains of corner-sharing [CuI4] tetra­hedra. Crystal structure and Hirshfeld surface analyses reveal that hydrogen bonding and π⋯I inter­actions play a vital role in mediating the inter­actions between the organic and inorganic components of this compound. Distortion analysis using τ4, τ4', and Baur indices shows that this compound exhibits the lowest [CuI4] tetra­hedral distortion among reported analogues.

In the complex anion in the title compound, the cerium cation adopts a near regular square-anti­prismatic coordination geometry arising from four O,O-bidentate ligands.

In the crystal of the anhydrous salt of levofloxacin with 4-methyl­benzoic acid, C18H21FN3O4+·C8H7O2−, the levofloxacinium ions inter­act with the 4-methyl­benzoate anion via N—H+⋯O− and C—H⋯O hydrogen bonds, forming a tape-like supra­molecular structure.

The asymmetric unit of the title compound, C56H44CuN6O10, contains one half of the complex mol­ecule. In the crystal, C—H⋯O hydrogen bonds link the mol­ecules, enclosing R44(18) ring motifs. In addition π–π inter­actions with centroid-to-centroid distances of 3.808 (2) Å and also a series of C—H⋯π(ring) inter­actions help to consolidate the packing in a three-dimensional architecture within the crystal.

A one-dimensional lanthanum coordination polymer based on 3,6-di­chloro­phthalate has been prepared by microwaves-assisted synthesis and structurally described.

The lithium halide dimethyl ether (DME) adducts [Li2Cl2(DME)4] and [Li2Br2(DME)4] form dimeric units linked into layers by CH3⋯Cl tetrel bonds or CH3⋯CH3, CH3⋯O and CH3⋯Br contacts, illustrating the coordination ability of dimethyl ether and its role in directing supra­molecular assembly.

The two compounds Ag3ISO4 and Ag4I2SO4, comprising Ag and I atoms and SO4 tetra­hedra, exhibit characteristic silver arrangements, with Ag3ISO4 containing triangularly arranged Ag atoms in zigzag ladder chains along the a-axis direction and Ag4I2SO4 featuring discrete Ag4 clusters.

The phenyl ring forms a dihedral angle of 34.72 (6)° with the mean plane of the pyrazolo­[3,4-d]pyrimidine ring system.

The crystal structure of (C6H14N2)[Br3]2 contains diprotonated tri­ethyl­enediaminium cations, the charge of which is com­pensated by [Br3]− anions. The crystal packing is stabilized by Br⋯Br contacts, forming two-dimensional layers, and by N—H⋯Br/C—H⋯Br inter­actions between cations and tribromide anions.

In the title compounds, 2,2′-{[anthracene-9,10-diylbis(methyl­ene)]bis­(sulfanedi­yl)}di­benzoic acid di­methyl­acetamide tetra­solvate, C30H22O4S2·4C4H9NO 1 and 4,4′-{[anthracene-9,10-diylbis(methyl­ene)]bis­(­oxy)}di­benzoic acid di­methyl­formamide disolvate, C30H22O6·2C3H7NO 2, the complete anthracene–benzoic acid mol­ecule is generated by a crystallographic centre of symmetry. The dihedral angle between the anthracene ring system and the pendant ring is 71.43 (7) in 1 and 75.27 (12)° in 2. In the extended structures of both compounds, O—H⋯O hydrogen bonds link the main mol­ecules into pairs of solvent mol­ecules to generate trimers.

In the title solvates, the indole ring rotations (58–72°) relative to the plane of the central ring govern non-planarity. In the extended structures, N—H⋯O links form chains or sheets and disordered solvents were masked.

The title compound displays an infinite ladder structure built of alternately arranged ZnO3N and PO3(OH) tetra­hedra, linked O—H⋯O hydrogen bonds into supra­molecular sheets. C—H⋯O inter­actions between CH groups of the pyridine rings and phosphate groups connect the sheets into a three-dimensional framework structure.

The polymorphism of the title salen-type compound synthesized from racemic-(+/-)-1,2-di­phenyl­ethyl­enedi­amine and 3-chloro­salicyl­aldehyde is reported

A μ-oxo vanadium(V) dimeric complex, μ-oxido-bis­[(2,2′-{[ethane-1,2-diylbis(aza­nedi­yl)]bis­(methyl­ene)}diphenolato)oxidovanadium(V)], was synthesized and structurally characterized.

The title compound is a multi-substituted piperidine derivative in which the piperidine ring adopts a chair conformation.

The crystal structures of the two title hydrated phases of K3(VO4) consist of isolated vanadate tetra­hedra linked via K+ cations. The difference in water content is noticeable in the hydrogen-bonding inter­actions, which define a finite network for the 0.56-hydrate phase and an infinite network for the 4-hydrate phase.

The mol­ecule of the title compound, C16H9BrClNO2, contains furan and phenyl rings and an almost planar iso­indole ring system, which is coplanar with the furan ring. In the crystal, C—H⋯O hydrogen bonds link the mol­ecules into a two-dimensional network. π–π stacking helps to consolidate the packing.

The mol­ecule of the title compound contains a planar thieno[2,3-f]iso­indole ring system and a phenyl ring. In crystal, the mol­ecules are linked through C—H⋯O hydrogen bonds, enclosing R22(14) ring motifs, into a three-dimensional architecture. π–π inter­actions further consolidate the crystal structure.

The title compound crystallizes as closely associated pairs across an inversion center, with near approach enabled by Ni⋯S inter­molecular contacts of 3.396 (2) Å and bending of the di­thiol­ene ligands away from one another.

5-(3-Nitro-1H-pyrazol-4-yl)tetra­zole crystallizes with two mol­ecules of nearly identical conformation in the asymmetric unit.