Bis[5-(anthracen-9-ylmeth­yl)-1,5,9-tri­aza­cyclododecan-1-ium] tetra­chlorido­zincate

The structure of the title salt comprising two monoprotonated polyamine ligands and one tetra­chloro­zincate(II) anion was analyzed and compared with those of structurally related compounds bearing different macrocyclic frameworks and pendant arms. The protonated nitro­gen atoms engaged in intra­molecular hydrogen bonding with other nitro­gen atoms within the macrocyclic ring.

Bis(4,4′-bipyridin-1-ium) cis-bis­(1,2-di­cyano-2-sulfido­ethene-1-sulfinato-κ²S,S′)platinate(2−)

The crystal structure of the title sulfinate-containing platinate salt features cationic chains composed of 4,4′-bipyridin-1-ium surrounding slipped-stacked anions of platinum doubly chelated by a sulfinato ligand.

Poly[[tetra­aqua­(μ₃-4-hy­droxy­pyridine-2,6-di­carboxyl­ato)di-μ₂-oxalato-dipraseodymium(III)] 4.29-hydrate]

The title compound [Pr^III₂(HCAM)(ox)₂(H₂O)₄]·4.29H₂O features a two-dimensional coordination polymeric framework of Pr^III with partially deprotonated chelidamic acid (HCAM²⁻) and oxalate (ox²⁻) linkers. The two-dimensional sheets further assemble through hydrogen bonding and π–π inter­actions into three-dimensional supra­molecular architecture.

2-Amino-4-ferrocenyl-5-oxo-5,6,7,8-tetra­hydro-4H-chromene-3-carbo­nitrile monohydrate

The crystal packing is consolidated by O—H⋯N, O—H⋯O, N—H⋯O, and N—H⋯π hydrogen bonds, with the solvent water mol­ecule acting as both donor and acceptor. This results in a two-dimensional hydrogen-bonded network extending parallel to the bc plane.

Di­chlorido­{(E)-N,N-di­methyl-2-[phen­yl(pyridin-2-yl)methyl­idene]hydrazine-1-carbo­thio­amide}cadmium(II)

The structure of the cadmium-bound model ligand, 3,3-dimethyl-1-[(E)-[phen­yl(pyridine-2-yl)methyl­idene]amino]­thio­urea (Bp44mT), which is used across medicinal chemistry and in metal-based nanoparticles research has been determined and analyzed. This complex is used to gain insight to the specificity and selectivity of the ligand and to model how 3,3-dimethyl-1-[(E)-[phen­yl(pyridine-2-yl)methyl­idene]amino]­thio­urea might be used in chelation to counter metal poisoning and for environmental remediation.

4,12-Diselena-5,6,13,14-tetra­aza­tri­cyclo­[9.3.0.0^3,7]tetra­deca-1(11),3(7),5,13-tetra­ene

Two almost planar 1,2,3-selena­diazo­les are annulated to a cyclo­octa-1,4-diene with a boat–chair conformation, giving the mol­ecule a butterfly shape.

2′-Amino-5′-benzoyl-5-bromo-6′-methyl-2-oxo­spiro­[indoline-3,4′-pyran]-3′-carbo­nitrile

In the title compound, the indoline ring system is almost planar, while the pyran ring is in flattened-boat conformation. In the crystal, N—H⋯O and N—H⋯N hydrogen bonds link the mol­ecules, enclosing R²₂(8) and R²₂(12) ring motifs, into (001) sheets.

N,N′-[Oxybis(benzene-4,1-di­yl)]diacetamide

In the title compound, the phenyl groups are twisted away from coplanarity with the ether linkage, forming a dihedral angle of 59.49 (4)° with each other. In the crystal, the acetamide N—H groups form inter­molecular N—H⋯O hydrogen bonds to acetamide O atom, with both NH groups donating to the same mol­ecule. Thus, ladder-like chains exist in the [101] direction.

tert-Butyl [(4-fluoro-3-isopropoxyisoxazol-5-yl)meth­yl](phenyl­sulfon­yl)carbamate

The crystal structure of a 4-fluoro­isoxazole compound bearing a sulfonamide functionality is described.

N-[(1Z)-Cyclo­dec-5-yn-1-yl­idene]hydroxyl­amine

The crystal structure of cyclo­decynone oxime, C₁₀H₁₅NO, is reported. Two twist-boat-shaped cyclo­alkynes are centrosymmetrically connected via oxime hydrogen bridges. Deformation of the alkyne unit results from ring strain.

(E)-1-(4-Bromo­phen­yl)but-2-en-1-one

The title compound consists of a para-substituted bromo­phenyl core and an unsaturated carbonyl side chain.

2-Methyl-4-[(4-methyl­phen­yl)amino]­benzoic acid

The mol­ecules of the title compound form acid–acid homodimers in the crystal structure.

2-Amino-6-nitro-1,3-benzo­thia­zol-3-ium 3-carb­oxy-4-hy­droxy­benzene-1-sulfonate

In the title salt, the cation is protonated at the thia­zole N atom and in the anion, the sulfonate group is deprotonated and an intra­molecular O—H⋯O hydrogen bond occurs. In the crystal, cation-to-anion N—H⋯O and anion-to-anion O—H⋯O hydrogen bonds link the component ions into (101) sheets.

(3Z)-4-Methyl-9-(4-methyl­benzene­sulfon­yl)-N-phenyl-3H,9H-thio­pyrano[3,4-b]indol-3-imine

The title indolothiopyrane imine, C₂₅H₂₀N₂O₂S₂, which was prepared by a [2 + 2 + 2] cycloaddition reaction, crystallizes with two molecules in the asymmetric unit. Both adopt the shape of a staircase with two steps, consolidated by intramolecular C—H⋯O interactions.