Crystal structure of the λ-Al₁₃Fe₄-type inter­metallic (Al,Cu)₁₃(Fe,Cu)₄

An (Al,Cu)₁₃(Fe,Cu)₄ phase was obtained by the high-pressure sinter­ing (HPS) process of a mixture with stoichiometry Al₇₈Cu₁₅Fe₇. Structure analysis suggests that Cu atoms can replace both Al and Fe atoms.

trans-(Aniline-κN)di­chlorido­(di­methyl sulfoxide-κS)platinum(II)

In the title compound, the central Pt^II atom is in an approximately square-planar configuration with the chloride ligands mutually trans. The crystal packing features N—H⋯O, C—H⋯Cl and C—H⋯O hydrogen bonds.

Redetermination of nickel(II) formate dihydrate

The crystal structure of Ni(HCOO)₂·2H₂O has been redetermined on the basis of modern single-crystal X-ray CCD data. The redetermination confirms the previous model based on powder X-ray data, but with higher precision and accuracy.

{Bis[2-(diiso­propyl­phosphan­yl)eth­yl]amine}­carbon­yl(tetra­hydro­borato)cobalt(I)

The crystal structure of a Co^I hydride pincer complex with a distorted square-pyramidal coordination geometry is presented.

2,2′-Disulfanediylbis(pyridine N-oxide)–hydrogen peroxide (1/1)

Both components of the title co-crystal are generated by crystallographic twofold symmetry. In the crystal, the components are linked by O—H⋯O hydrogen bonds to generate [010] chains of alternating 2,2′-di­thio­bis­(pyridine N-oxide) and hydrogen peroxide mol­ecules.

rac-(9R,10R)-3,6,9,10-Tetra­bromo-8,8-di­methyl-9,10-di­hydro-2H,8H-pyrano[2,3-f]chromen-2-one (tetra­bromo­seselin): a photobiochemically active pyran­ocoumarin

The title mol­ecule, is a tetra­bromo derivative of the pyran­ocoumarin seselin which has photobiological activity.

1-De­oxy-1-(N-methyl-4-fluoro­phenyl­amino)-D-arabino-hexulose

The monoclinic unit contains the acyclic keto tautomer of the amino­sugar, which is involved in an extensive hydrogen-bonding network.

1-Benzyl-3-methyl­quinoxalin-2(1H)-one

The asymmetric unit of the title compound contains three independent mol­ecules differing primarily in the orientations of the benzyl groups. C—H⋯N, C—H⋯π(ring) and offset π-stacking inter­actions stabilize the crystal structure.

4-Cyclo­hexyl-1-(2-meth­oxy­benzo­yl)thio­semi­carbazide with an unknown solvent

The title compound, was synthesized from methyl-2-meth­oxy benzoate. In the crystal, pairs of inter­molecular bifurcated N–H(H)⋯O hydrogen bonds link the mol­ecules to form inversion dimers, with (6) ring motifs.

2,4-Di­bromo-6-[(2-hy­droxy-5-methyl­anilino)methyl­idene]cyclo­hexa-2,4-dienone

The asymmetric unit of the title compound consists of two independent mol­ecules, which are related to each other by a pseudo-inversion centre.

tert-Butyl 4-{3-[6-(4-meth­oxy­phen­yl)-2-methyl­pyrimidin-4-yl]quinolin-2-yl}piperazine-1-carboxyl­ate

The asymmetric unit of the title compound contains two independent mol­ecules. In the crystal, C—H⋯O hydrogen bonds link the mol­ecules into chains along [100].

1-{2-Anilino-4-methyl-5-[5-methyl-1-(4-methyl­phen­yl)-1H-1,2,3-triazole-4-carbon­yl]thio­phen-3-yl}ethanone

The dihedral angle between the triazole and thio­phene rings is 4.83 (14)° while those between the triazole and toluyl rings and between the thio­phene and phenyl rings are 48.42 (16) and 9.23 (13)°, respectively. An intra­molecular N—H⋯O hydrogen bond closes an S(6) loop. In the crystal, mol­ecules are stacked parallel to the a-axis direction with weak π–π inter­actions between adjacent thio­phenyl and triazolyl groups within the stack.

5-Methyl-N′-(5-methyl-1-phenyl-1H-1,2,3-triazole-4-carbon­yl)-1-phenyl-1H-1,2,3-triazole-4-carbohydrazide

The asymmetric unit comprises one complete mol­ecule and a half mol­ecule completed by crystallographic twofold symmetry leading to Z = 12. In the crystal, neighbouring mol­ecules are linked by pairs of N—H⋯O hydrogen bonds to form independent columns propagating parallel to the c-axis direction.

5-Bromo-1-(4-bromo­phen­yl)isatin

All of the atoms except the C—H groups in the bromo­benene ring lie on a (010) crystallographic mirror plane, with the benzene ring completed by reflection. The dihedral angle between the ring systems is constrained to be 90° by symmetry. In the crystal, mol­ecules are linked by weak C—H⋯Br inter­actions in the [100] direction and paired very weak C—H⋯O inter­actions to the same acceptor in the [001] direction, generating (010) sheets.

2-Fluoro-5-nitro­aniline

The dihedral angle between the nitro group and the benzene ring is 3.68 (2)°, and an intra­molecular N—H⋯F hydrogen bond is observed. The crystal packing is consolidated by C—H⋯O and N—H⋯O hydrogen bonds; together, these generate [110] double chains.

[1,4-Bis(4-meth­oxy­phen­yl)but-3-yn-2-yl](cyano)­methyl­amine

The structure of [1,4-bis­(4-meth­oxy­phen­yl)but-3-yn-2-yl](cyano)­methyl­amine, a subsituted cyanamide, is reported.

2-Amino­anilinium benzene-1,2-diaminium tris­(4-methyl­benzene-1-sulfonate)

In the title mol­ecular salt, one of the cations is doubly protonated and one is singly protonated with charge balance achieved by three sulfonate anions. The crystal structure features inter­ionic N—H⋯O and C—H⋯O hydrogen bonds.

5-[Phen­yl(pyridin-4-yl)amino]­penta-2,4-diyn-1-ol

In the title compound, the mol­ecules form the supra­molecular dimers via hydrogen bonds between hy­droxy and pyridyl groups.

N-[(1R,2S)-1-(4-Bromo­phen­yl)-2-fluoro-3-(2-methyl­phenyl)-3-oxoprop­yl]-4-nitro­benzamide

The title compound contains two chiral carbon centres. Its crystal structure features N—H⋯O inter­molecular inter­actions, generating a three dimensional network structure.

4-(4-Bromo­phenyl)-2-(3-(4-chloro­phenyl)-5-{3-[5-methyl-1-(4-methylphenyl)-1H-1,2,3-triazol-4-yl]-1-phenyl-1H-pyrazol-4-yl}-4,5-di­hydro-1H-pyrazol-1-yl)-1,3-thiazole

The structure of the title compound with a triazolyl-pyrazolyl-phenyl ring system linked to a chloro­phen­yl–thia­zol­yl–di­hydro­pyrazol­yl–bromo­phenyl set of rings by a bond between the di­hydro­pyrazolyl and pyrazolyl rings is reported.

4-(4-Bromo­phen­yl)-2-(3-(4-bromo­phen­yl)-5-{3-[5-methyl-1-(4-methyl­phen­yl)-1H-1,2,3-triazol-4-yl]-1-phenyl-1H-pyrazol-4-yl}-4,5-di­hydro-1H-pyrazol-1-yl)-1,3-thia­zole

In the crystal, weak C—H⋯Br inter­actions form chains of mol­ecules propagating in the [010] direction.

N,N-Di­methyl-2-[(1E)-({[(methyl­sulfan­yl)methane­thio­yl]amino}­imino)­meth­yl]aniline

In the crystal, mol­ecules are linked by pairs of weak N—H⋯S hydrogen bonds, forming inversion dimers.

4-(4-Chloro­phen­yl)-1,2,3-selena­diazole

The dihedral angle between the selena­diazole and chloro­phenyl rings is 16.6 (2)°. In the crystal, π–π stacking inter­actions between the phenyl and selena­diazole rings are observed. There is also a short Se⋯Cl contact

(E)-4-Methyl-2-(N-phenyl­carboximido­yl)phenol

In the title compound, the dihedral angle between the aryl rings is 6.22 (11)°. The mol­ecular structure is stabilized by an intra­molecular O—H⋯N hydrogen bond.

1-Methyl-1H-pyrazolo­[3,4-d]pyrimidin-4(5H)-one

The crystal structure of the title mol­ecule consists of sheets of mol­ecules linked by N—H⋯O, C—H⋯O and C—H⋯H hydrogen bonds.

4-(1H-Indol-3-yl)-2,6-bis­(pyrazin-2-yl)pyridine

The mol­ecules of the title compound are connected through N—H⋯N and C—H⋯N hydrogen bonds and aromatic π–π stacking inter­actions.