Aqua­(1,4,7,10-tetra­aza­cyclo­dodeca­ne)zinc(II) bis­(perchlorate)

The cationic Zn^II part of aqua­(1,4,7,10-tetra­aza­cyclo­dodeca­ne)zinc(II) diperchlorate, [Zn(C₈H₂₀N₄)H₂O](ClO₄)₂, exhibits a slightly distorted square-pyramidal coordination environment with a water mol­ecule in the apical position.

5-[(1,3-Di­methyl-5-oxo-2-sulfanylideneimidazolidin-4-yl­idene)amino]-2-methyl­isoindoline-1,3-dione

The title pthalamide-substituted thio­hydantoin arose from an unexpected reaction in a deep eutectic di­methyl­thio­urea–tartaric acid solvent system.

4-Bromo-2-[({2-[(2-hy­droxy­eth­yl)amino]­eth­yl}imino)­meth­yl]phenol

The synthesis and crystal structure of a new Schiff base, namely, 4-bromo-2-[({2-[(2-hy­droxy­eth­yl)amino]­eth­yl}imino)­meth­yl]phenol, is reported.

4-(Di­phenyl­meth­oxy)-3-eth­oxy­benzaldehyde

The packing of the title compound features weak C—H⋯O and C—H⋯π inter­actions.

2-(2,4-Di­chloro­phen­oxy)-N′-[2-(2,4-di­chloro­phen­oxy)acet­yl]acetohydrazide

In the crystal of the title compound, the mol­ecules are linked into chains by N—H⋯O hydrogen bonds. The chains are inter­linked by short Cl⋯N contacts.

Ethyl 2-amino-4-methyl­thio­phene-3-carboxyl­ate

The title compound crystallizes with two mol­ecules, A and B, in the asymmetric unit. Each molecule features an intramolecular N—H⋯O hydrogen bond and the same H atom is also involved in an intermolecular N—H⋯S bond to generate A + B dimers. Further N—H⋯O hydrogen bonds link the dimers into a [010] chain.

4-(2,3-Di­chloro­phen­yl)piperazin-1-ium picrate

The title compound, C₆H₂N₃O₇⁻·C₁₀H₁₃Cl₂N₂⁺, crystallizes with one 1-(2,3-di­chloro­phen­yl)piperazine cation and one picrate anion in the asymmetric unit. In the crystal structure, the cations and anions are inter­connected via several N—H⋯O and C—H⋯O hydrogen bonds.

3,5-Di­bromo-4-carbamoyl­benzoic acid 2-propanol monosolvate

Mol­ecules of the title compound are linked by hydrogen-bond dimerization of the amido group, and a chain of hydrogen bonds between 2-propanol and the carboxyl and amido groups that propagates parallel to [100].

Quinine di­hydro­chloride hemihydrate

The title compound is a di­hydro­chloride salt with discrete ionic moieties linked together by extensive hydrogen bonding. Serendipitous water in the lattice aids with the formation of these hydrogen-bonding networks.

9-[3-(9H-Carbazol-9-yl)-5-iodo­phen­yl]-9H-carbazole

In the title compound, two independent mol­ecules (A and B) are present in the asymmetric unit, with different conformations. The dihedral angle between the mean planes of the carbazole systems for mol­ecule A is 49.1 (2)° compared to 84.0 (1)° for mol­ecule B. In the crystal, numerous aromatic π–π stacking inter­actions [shortest centroid–centroid separation = 3.7069 (19) Å] help to establish the three-dimensional supra­molecular network.

[2,5-Bis(di­propyl­amino)-4-(hy­droxy­meth­yl)phen­yl]methanol

The centrosymmetric title compound was prepared in five steps from diethyl succinate. The di­propyl­amino groups are almost orthogonal to the central phenyl­enedi­methanol ring system [dihedral angle = 87.62 (9)°]. In the crystal, the mol­ecules are connected by O—H⋯N hydrogen bonds, forming (101) layers separated by the propyl chains.