Bis(1,10-phenanthroline-κ²N,N′)platinum(II) bis­(3-carb­oxy­benzene­sulfonate) dihydrate

In the crystal of the complex comprising a [Pt(1,10-phen)₂]²⁺ complex cation (1,10-phen = 1,10-phenanthroline), two 3-sulfobenzoate anions and two lattice water mol­ecules, the anions and water mol­ecules form hydrogen-bonded centrosymmetric dimers. In addition, π–π inter­actions are observed between 1,10-phenanthroline ligands and 3-sulfobenzoate anions.

N-Ferrocenymethyl-N-phenyl­acetamide

In the structure of N-ferrocenymethyl-N-phenyl­acetamide, the asymmetric unit comprises two unique mol­ecules with the two cyclo­penta­dienyl rings of each ferrocene residue nearly eclipsed and parallel to one another. In the crystal, C—H⋯O hydrogen bonds stack mol­ecules along a.

catena-Poly[silver(I)-μ-[1-(pyridin-2-ylmethyl-κN)-3-(3-sulfonato­prop­yl)imidazolin-2-yl­idene]-κC²]

The title compound is a one-dimensional helical coordination polymer. The C—Ag—N bond angle is 168.3 (1)°.

Di-μ-chlorido-bis­[(2,2′-bi­pyridine-κ²N,N′)chlorido(N,N-di­methyl­formamide-κO)nickel(II)]

The crystal structure of [(bipy)(μ-Cl)NiCl(DMF)]₂ is reported. The compound exists as a dimer with two octa­hedral nickel atoms.

Caesium tetra­methyl­ammonium dodeca­hydrido-closo-dodeca­borate monohydrate

In the hydrated title compound, the crystal structure is stabilized by B—H⋯H—O and B—H⋯H—C di­hydrogen bonds.

N,N,N′,N′,N′′,N′′-Hexa­methyl­guanidinium di-μ₃-chlorido-tetra-μ₂-chlorido-deca­chlorido­tetra­bis­muthate aceto­nitrile disolvate

The asymmetric unit of the solvated title salt comprises two cations, one half [Bi₄Cl₁₆]⁴⁻ ion and one aceto­nitrile mol­ecule. The C—N bond lengths in both guanidinium ions indicate double-bond character, pointing towards charge delocalization within the NCN planes. The crystal structure is stabilized by a three-dimensional network of C—H⋯Cl hydrogen bonds.

N,N,N′,N′,N′′,N′′,N′′′,N′′′-Octa­meth­yl(but-2-yne)bis­amidinium bis­(tetra­phenyl­borate)

The bond lengths in the cation of the title salt, C₁₂H₂₄N₄²⁺.2 C₂₄H₂₀B⁻, indicate delocalization of the positive charges over the di­methyl­amino groups.

2-(5-Methyl-1-benzo­furan-3-yl)acetic acid

The title compound, C₁₁H₁₀O₃, contains two crystallographically independent mol­ecules with similar conformations (r.m.s. overlay fit = 0.105 Å); both form carb­oxy­lic acid inversion dimers linked by pairs of O—H⋯O hydrogen bonds in the crystal.

6-Fluoro-1H-indole-2,3-dione

The crystal structure of 6-fluoro-1H-indole-2,3-dione is reported. In the crystal N—H⋯O, C—H⋯O and C—H⋯F inter­actions are present.

1-Ethyl-3-nitro­quinolin-4(1H)-one

The 15 non-H atoms in the title compound are coplanar with the methyl group sitting prime to the plane. Supra­molecular undulating ribbons sustained by C—H⋯O inter­actions are found in the crystal structure.

2,5-Bis(3,4-di­meth­oxy­phen­yl)-1,3,4-oxa­diazole

The title mol­ecule, C₁₈H₁₈N₂O₅, is close to planar (r.m.s. deviation = 0.173 Å). Weak C—H⋯O inter­actions and aromatic π–π stacking occur in the crystal.

(5,7-Di­methyl-2-oxo-2H-chromen-4-yl)methyl morpholine-4-carbodi­thio­ate

In the crystal of the title compound, C₁₇H₁₉NO₃S₂, inversion dimers linked by pairs of weak C—H⋯O hydrogen bonds generate (16) loops.

(7,8-Di­methyl-2-oxo-2H-chromen-4-yl)methyl piperidine-1-carbodi­thio­ate

In the title compound, C₁₈H₂₁NO₂S₂, the dihedral angle between the coumarin unit and the piperidine ring is 60.54 (8)°.

5-Bromo-1H-indole-2,3-dione

The crystal structure of 5-bromo-1H-indole-2,3-dione is reported. In the crystal, mol­ecules are linked by N—H⋯O and C—H⋯O inter­actions.

Limonin isolated from the seeds of Citrus limetta (Indian sweet lemon)

The fused cyclic system of the title compound, commonly known as limonin, consists of a cyclo­hexane, a cyclo­hexa­none, a furan, an epoxide and two lactone rings.

4-(3-Chloro­phen­yl)-1-(3-chloro­prop­yl)piperazin-1-ium chloride redetermined at 100 K

The crystal structure of C₁₃H₁₉Cl₂N₂⁺·Cl⁻ determined at 100 K resolves the disorder of the chloro­propyl group that was observed in the room-temperature structure.

N,N,N′,N′-Tetra­methyl-N′′-[2-(tri­methyl­aza­nium­yl)eth­yl]guanidinium bis­(tetra­phenyl­borate) acetone disolvate

In the solvated title compound, the C—N bonds in the CN₃ unit of the dication show partial double-bond character and one positive charge is delocalized. The second positive charge is localized in the tri­methyl­ammonium group. The crystal structure is stabilized by N—H⋯O and C–H⋯O hydrogen bonds. C—H⋯π inter­actions are present between the guanidinium H atoms and the phenyl C atoms of the tetra­phenyl­borate ions.

2,4-Di-tert-butyl-6-({[(R)-1-phenyl­eth­yl]amino}­meth­yl)phenol

The title compound, which is an analogue of ligands used in olefin polymerization catalysts, crystallizes with two mol­ecules in the asymmetric unit, both of which feature intra­molecular O—H⋯N hydrogen bonds.

6H-Dipyrido[1,2-a:2′,1′-d][1,3,5]triazin-5-ium bromide monohydrate

In the 6H-dipyrido[1,2-a:2′,1′-d][1,3,5]triazin-5-ium cation, the central 1,3,5-triazinium ring has a flat boat conformation and the outer heterocyclic rings are nearly planar. In the crystal, classical O—H⋯Br hydrogen bonds and weak C—H⋯Br and C—H⋯O hydrogen bonds link the cations, bromide anions and lattice water mol­ecules into a three-dimensional supra­molecular network.

t-3-Benzyl-r-2,c-6-di­phenyl­piperidin-4-one

The title compound crystallized with two independent mol­ecules (A and B) in the asymmetric unit. In the crystal, the mol­ecules are linked to one another via N—H⋯O hydrogen bonds forming –A–B–A–B– chains along [100].

Benzyl 3-(3,4,5-tri­meth­oxy­benzyl­idene)di­thio­carbazate

In the title di­thio­carbazate derivative, the tri­meth­oxy­phenyl group and the di­thio­carbazate fragment lie almost in the same plane; the mean plane of the di­thio­carbazate unit being inclined to the tri­meth­oxy­phenyl ring by 13.34 (6)°.

5-{[1-(2,4-Di­chloro­phen­yl)-1H-1,2,3-triazol-4-yl]meth­yl}-5H-dibenz[b,f]azepine

The crystal packing of the compound does not feature any specific strong or weak inter­molecular inter­actions.

4-Iodo-1H-indole-2,3-dione

In the crystal structure of 4-iodo-1H-indole-2,3-dione, both N—H⋯O hydrogen bonds and I⋯O and π–π inter­actions are observed.

N,N,N′,N′,N′′-Penta­methyl-N′′-[2-(tri­methyl­aza­nium­yl)eth­yl]guanidinium bis­(tetra­phenyl­borate) acetone monosolvate

In the solvated title compound, the C—N bonds in the CN₃ units of both dications show partial double-bond character and one positive charge is delocalized. The second positive charge is localized in the tri­methyl­ammonium groups. The crystal structure is stabilized by C—H⋯O and C—H⋯π inter­actions.

5-[2,4-Dihy­droxy-5-(5-hy­droxy-2,4,6-trioxo-3,5-di­hydro-1H-pyrimidin-5-yl)-3-meth­oxy­phen­yl]-5-hy­droxy-3,5-di­hydro-1H-pyrimidine-2,4,6-trione penta­hydrate

The title compound displays a `propeller-like' structure, with the mean planes of the two alloxan units almost normal with respect to the central aromatic ring and inclined to one another by 40.86 (7)°. This compound can be used as a model for possible binding to a solid phase for separation techniques of certain ion-pairs from aqueous solutions.

(3E)-5-Chloro-3-(2-phenyl­hydrazinyl­idene)-1H-indol-2(3H)-one

The nearly planar title mol­ecules are linked by a pairs of N—H⋯O inter­actions into an inverson dimer. The dimers are connectec by weak H⋯Cl inter­actions into a two-dimensional hydrogen-bonded polymer and stacked along the b axis, connected by weak π–π inter­actions. An in silico evaluation of the title compound with an topoisomerase enzyme was performed and several inter­molecular inter­actions can be assigned.

4-Bromo-1H-indole-2,3-dione

The crystal structure of 4-bromo-1H-indole-2,3-dione is reported. In the crystal, N—H⋯O, Br⋯O and π–π inter­actions are present.

7-Bromo-1H-indole-2,3-dione

The crystal structure of 7-bromo-1H-indole-2,3-dione is reported. In the crystal, N—H⋯O, Br⋯O and π–π inter­actions are present.

4,4′-(1,2-Di­aza­niumyl­ethane-1,2-di­yl)dibenzoate trihydrate

The mol­ecule is a double zwitterion with two of the carb­oxy­lic acid H atoms transferred to the two N atoms. Inter­molecular N—H⋯O and O—H⋯O hydrogen bond involving the ammonium groups, the carboxyl­ate groups and the water mol­ecules are observed.

Di­ethyl 3-amino-6-methyl-4-[(E)-2-phenyl­ethen­yl]thieno[2,3-b]pyridine-2,5-di­carboxyl­ate

The bicyclic core of the title compound is slightly folded [1.9 (1)°], while pairwise inter­molecular N—H⋯O hydrogen bonding forms dimers across centers of symmetry.

1,3,7,9-Tetra­kis[2,6-bis­(1-methyl­eth­yl)phen­yl]-2,2,8,8-tetra­phenyl-5,10-di­thia-1,3,7,9-tetra­aza-2,8-disila-4,6-digermadi­spiro­[3.1.3.1]decane aceto­nitrile monosolvate

Inter­action of the aryl­amido germylene [Ph₂Si(DippN)₂Ge:] with elemental sulfur afforded a new germane­thione dimer and its structure is reported here.

2,5-Dimeth­oxy-3,4,6-tri­methyl­benzaldehyde

The mol­ecular and crystal structure of the centrosymmetric 2,5-dimeth­oxy-3,4,6-tri­methyl­benzaldehyde is reported. The methyl and aldehyde substituents are disordered over four carbon atoms of the benzene ring.

(Z)-N-(2-Iodo­phen­yl)-4-nitro­benzimidoyl cyanide

The cyanide group is anti to the iodide substituent of the adjacent benzene ring. Supra­molecular C(8) chains, mediated by C—H⋯N inter­actions, are found in the mol­ecular packing.