H-type Ce₂[Si₂O₇]

Ce₂[Si₂O₇] was obtained in its H-type structure and crystallizes isotypically with H-La₂[Si₂O₇].

Bis(tetra­butyl­ammonium) tetra­chlorido­manganate(II) di­chloro­methane disolvate

The ionic title compound consists of a 2:1 ratio of the tetra­butyl­ammonium cation (1+) and the tetra­chlorido­manganate(II) anion (2–). The structure reported contains two di­chloro­methane solvent mol­ecules co-crystallized per anion.

Poly[[bis­[μ₄-3-(2-carboxyl­atophen­yl)propionato]{N-[2-(pyridine-3-amido)­eth­yl]nicotinamide}­dicopper(II)] penta­hydrate]

A divalent copper three-dimensional self-penetrated coordination polymer with rob topology, {[Cu₂(3-(2-carb­oxy­phen­yl)propionate)₂(ethyl­enedi­amine­(bis­(nicotinamide)] ^.5H₂O}_n, was structurally characterized by single-crystal X-ray diffraction.

Poly[[(μ-aqua)[μ₄-4-(carboxyl­atometh­yl)ben­zoato]cobalt(II)] hemi[1,4-bis­(pyridin-4-ylmeth­yl)piper­azine] hemihydrate]

A divalent cobalt two-dimensional slab coordination polymer with cocrystallized species, {[Co(cmb)(H₂O)].0.5(bpmp)·0.5H₂O}_n (where cmb is 4-(carboxyl­atometh­yl)benzoate and bpmp is 1,4-bis­(pyridin-4-ylmeth­yl)piperazine, was structurally characterized by single-crystal X-ray diffraction.

N-(4-Eth­oxy­phen­yl)-3-oxobutanamide

The title compound, C₁₂H₁₅NO₃, crystallizes with Z′ = 2 in space group Pca2₁ with the two independent mol­ecules having almost the same conformation, differing mostly at the end of the butanamide chain. A local inversion center near 1/8, 3/4, z relates the two mol­ecules, as is common for structures in this space group with Z′ = 2. The mol­ecule crystallizes as the keto tautomer, and the β-diketone moieties are twisted out of planarity, with O—C⋯C—O pseudo torsion angles of −74.4 (5) and −83.9 (5)°.

9,10-Bis(iodo­ethyn­yl)anthracene

The title compound exhibits I⋯π halogen bonding and π-stacking in its extended structure.

1-[1,4-Bis(but-3-en-1-yl­oxy)]-2,3,4,5-(1,4-dimeth­oxy)pillar[5]arene–1,4-di­bromo­butane 1:1 inclusion complex

In the title compound, both the host and guest are completed by crystallographic twofold symmetry (one carbon atom of the host lies on the rotation axis). The penta­gonal-shaped macrocycle has a pair of butene­oxy substituents on one of its faces and one mol­ecule of 1,4-di­bromo­butane is encapsulated within the cavity of the pillararene, forming a 1:1 inclusion complex.

3-Methyl-2-(4-methyl­phen­oxy)benzoic acid

The title compound features carb­oxy­lic acid inversion dimers in its extended structure.

4-(3-Chloro­anilino)benzoic acid

High quality crystals of 4-(3-chloro­anilino)benzoic acid were grown in aceto­nitrile and its crystal structure was determined by single-crystal X-ray diffraction.

4-Oxo-N-phenyl-1,4-di­hydro­pyridine-3-carboxamide

Single crystals of 4-oxo-N-phenyl-1,4-di­hydro­pyridine-3-carboxamide were obtained by slow evaporation of a solution of the title compound in acetone. The crystal structure is sustained by hydrogen bonds between the NH and the carbonyl O function of the 4-oxo-1,4-di­hydro­pyridine ring of the mol­ecules, forming infinite chains along the b-axis direction.

N-(2,6-Di­chloro­phen­yl)-2-oxo-1,2-di­hydro­pyridine-3-carboxamide

The title mol­ecule has a highly twisted conformation with the two aromatic rings being almost perpendicular to each other. Through mutual N—H⋯O hydrogen bonds, the mol­ecules form centrosymmetric lactam–lactam dimers in the crystal.

N-(3-Chloro-2-methyl­phen­yl)-6-oxo-1,6-di­hydro­pyridine-3-carboxamide

The title compound was synthesized with 6-oxo-1,6-di­hydro­pyridine-3-carb­oxy­lic acid and 3-chloro-2-methyl­aniline as starting materials. The crystal packing is characterized by two types of N—H⋯O hydrogen bonds.

4-Methyl-2-(2-methyl­anilino)benzoic acid

Single crystals of 4-methyl-2-(o-tolyl­amino)­benzoic acid were obtained from slow evaporation of an acetone solution. The mol­ecule is highly twisted with a dihedral angle between the aromatic rings of 50.86 (5)°. In the crystal structure, the mol­ecules associate to form acid–acid dimers.

N-(5-Cyano­nonan-5-yl)benzamide

The title compound crystallizes in the ortho­rhom­bic space group Pbca with eight formula units per unit cell. The N—H group forms an inter­molecular N—H⋯O hydrogen bond to the amide carbonyl O atom, generating chains.