Poly[[(μ₂-but-2-ynedioato)[μ₂-1,2-(pyridin-4-yl)ethyl­ene]zinc(II)] dihydrate]

2-Butyndioate and 1,2-bis­(pyridin-4-yl)ethyl­ene ligands bridge Zn^II ions to form a three-dimensional network. The three-dimensional networks are fivefold inter­penetrated, and each network features a 4-connected unimodal net with a Schläfli symbol of 6⁶ (dia) with the Zn^II ions as the nodes.

Cobaltoceniumsulfonate

Zwitterionic monoclinic C₁₀H₉CoO₃S was obtained as yellow crystals.

Bis{μ-ethyl 4-[(4-hy­droxy­phen­yl)diazen­yl]benzoate-κO}bis­[aqua­(4-{[4-(eth­oxy­carbon­yl)phen­yl]diazen­yl}phenolato-κO){ethyl 4-[(4-hy­droxyphen­yl)diazen­yl]benzoate-κO}potassium]

In the crystal structure of the dimeric title compound, the metal cations are connected through a double bridge involving uncharged ethyl 4-(phenyl­azophenol)benzoate ligands. The dimeric species are arranged parallel [001] through O—H⋯O and O—H⋯N hydrogen-bonding inter­actions.

2-(3-Bromo-4-meth­oxy­phen­yl)-3-nitro­pyridine

The mol­ecular and crystal structure of non-planar 2-(3-bromo-4-meth­oxy­phen­yl)-3-nitro­pyridine is reported.

3-Ethyl-5,5-di­phenyl­imidazolidine-2,4-dione

The structure of the title imidazolidinedione derivative is reported. The crystal packing is stabilized by N—H⋯O, C—H⋯O and C—H⋯π(ring) hydrogen bonds.

6-Bromo-2-(1,4-di­bromo-4-methyl­cyclo­hex­yl)-6-methyl­heptan-4-one

The cyclo­hexane ring of the title compound adopts a perfect chair conformation. In the crystal, mol­ecules are linked by C—H⋯O hydrogen bonds.

2-[(Prop-2-yn-1-yl)amino]­anilinium chloride

The structure of an anilinium chloride salt is reported. The crystal structure is stabilized by a series of N—H⋯Cl and C—H⋯Cl hydrogen bonds together with weak offset π-stacking inter­actions.

An ortho­rhom­bic polymorph of (E)-1-(benzo[d][1,3]dioxol-5-yl)-3-(2,3-di­chloro­phen­yl)prop-2-en-1-one

The mol­ecular and crystal structure of a chalcone derivative is reported. In the crystal, mol­ecules are linked by a weak C—H⋯O and C—H⋯Cl hydrogen bonds, forming a chain propagating along the b-axis direction.

2,6-Di­bromo-4-nitro­benzo­nitrile

The crystal and mol­ecular structures of 2,6-di­bromo-4-nitro­benzo­nitrile are reported. Each peripheral substituent atom participates in CN⋯Br contacts, or weak C—H⋯O hydrogen bonds, forming planar sheets. Adjacent sheets stack about a glide plane.

2-Amino-1-methyl-4-oxo-4,5-di­hydro-1H-imidazol-3-ium 3-carb­oxy-4-hy­droxy­benzene­sulfonate monohydrate

The cation is protonated at the pyridine N atom and the anion is deprotonated at the hydroxyl O atom. The crystal structure features weak inter­ionic N—H⋯O, O—H⋯O hydrogen bonds and weak C—H⋯O contacts.

1-(4-Meth­oxy­phen­yl)-3-[2-(4-methyl­piperazin-1-yl)quinolin-3-yl]prop-2-en-1-one

The meth­oxy­phenyl-substituted ring makes a dihedral angle of 6.79 (5)° with the quinoline ring system. In the crystal, mol­ecules are linked by weak C—H⋯N and C—H⋯O hydrogen bonds, forming a two-dimensional network. π–π stacking inter­actions also occur.

(E)-1-(Pyridin-4-yl)propan-1-one O-tosyl oxime

The title compound was obtained by the reaction of (E)-1-(pyridin-4-yl)propan-1-one oxime and para-toluene­sulfonic acid. The pyridine ring makes a dihedral angle of 54.70 (10)° with the phenyl ring. In the crystal, mol­ecules are linked by C—H⋯O hydrogen bonds, forming a chain along the c-axis direction.

2,6-[Bis­(di­methyl­amino)­meth­yl]phenyl­selenenyl chloride/bromide monohydrate

The structure of a mixed halide (Cl⁻/Br⁻) salt of a selenenyl cation has been determined in which the cations, anions and water mol­ecules are linked by hydrogen bonds into chains.

5-(4-Meth­oxy­phen­yl)-4-methyl-1-phenyl-3-p-tolyl-1H-pyrazole

The asymmetric unit of the title compound contains two independent mol­ecules. The two mol­ecules form a dimer via a C—H⋯O hydrogen bond.

1-(Pyridin-2-yl)-2,4-bis­[(pyridin-2-yl)carbon­yl]-3,5-bis­(3,4,5-tri­meth­oxy­phen­yl)cyclo­hexa­nol 2.25-hydrate

In the title compound, the cyclo­hexa­nol ring adopts a chair conformation and makes dihedral angles of 87.89 (7) and 75.53 (8)° with the mean planes of the tri­meth­oxy­phenyl rings and 84.18 (8), 85.07 (7) and 82.03 (8)° with the pyridine rings. In the crystal, the packing features C—H⋯O, O—H⋯O and O—H⋯N hydrogen bonds involving the water mol­ecules and meth­oxy O atoms.

6-Methyl-1,4-bis­[(pyridin-2-yl)meth­yl]quinoxaline-2,3(1H,4H)-dione

The mol­ecular and crystal structure of the title quinoxaline derivative is reported. The crystal structure is stabilized by weak C—H⋯O inter­molecular inter­actions.

rac-cis-5-Methyl-2,3-di­phenyl-1,3-thia­zolidin-4-one

The tris­ubstituted 1,3-thia­zolidin-4-one ring in the title compound exhibits an envelope conformation with the S atom as the flap.

(E)-4-Fluoro-2-[(phenyl­imino)­meth­yl]phenol

In the title compound, the dihedral angle between the planes of the two aryl rings is 0.69 (15)°. An intra­molecular O—H⋯N hydrogen bond generates an S(6) ring. The crystal structure features C—H⋯O hydrogen bonds.

3-n-Pentyl-5,5-di­phenyl­imidazolidine-2,4-dione

In the crystal of 3-n-pentyl-5,5-di­phenyl­imidazolidine-2,4-dione, mol­ecules form an inversion dimer through a pair of N—H⋯O hydrogen bonds. These are linked into a three-dimensional network by C—H⋯O hydrogen bonds. The n-pentyl chain is disordered over two sites, with an occupancy ratio of 0.876 (2):0.124 (2).

N′-[(1Z)-1-(3-Methyl-5-oxo-1-phenyl-4,5-di­hydro-1H-pyrazol-4-yl­idene)eth­yl]-2-[(4-methyl­phen­yl)sulfan­yl]acetohydrazide

In the title mol­ecule, the three rings are within ca 6° of being coplanar; the conformation is influenced by intra­molecular hydrogen bonds.

Ethyl 3-amino-2-cyano-4-(4-meth­oxy­phen­yl)-6- methyl­thieno[2,3-b]pyridine-5-carboxyl­ate

In the title mol­ecule, the bicyclic core is planar. In the crystal, the mol­ecules stack along a-axis direction through π-π-stacking inter­actions between the bicyclic units. The stacks are held together by N—H⋯N and C—H⋯O hydrogen bonds.

3-Ethyl­indan-1-one

The mol­ecular structure of 3-ethyl­indan-1-one consists of a nearly planar indanone core with the ethyl group protruding from this plane.

Di­ethyl 1-[(4-methyl-2-phenyl-4,5-di­hydro-1,3-oxazol-4-yl)meth­yl]-1H-1,2,3-triazole-4,5-di­carboxyl­ate

In the crystal, C—H⋯N and C—H⋯O hydrogen bonds link mol­ecules into supra­molecular layers in the bc plane.

(E)-N-{3-[(m-Tolyl­imino)­meth­yl]pyridin-2-yl}pivalamide

In the title compound, an intra­molecular N—H⋯N hydrogen bond generates an S(6) ring. In the crystal, very weak C—H⋯O hydrogen bonds link the mol­ecules into C(8) [101] chains.